University Physics Volume 1 18th Edition
ISBN: 9781938168277
Author: William Moebs, Samuel J. Ling, Jeff Sanny
Publisher: William Moebs, Samuel J. Ling, Jeff Sanny
1 Units And Measurement 2 Vectors 3 Motion Along A Straight Line 4 Motion In Two And Three Dimensions 5 Newton's Law Of Motion 6 Applications Of Newton's Laws 7 Work And Kinetic Energy 8 Potential Energy And Conservation Of Energy 9 Linear Momentum And Collisions 10 Fixed-axis Rotation 11 Angular Momentum 12 Static Equilibrium And Elasticity 13 Gravitation 14 Fluid Mechanics 15 Oscillations 16 Waves 17 Sound Chapter9: Linear Momentum And Collisions
Chapter Questions Section: Chapter Questions
Problem 9.1CYU: Check Your Understanding The U.S. Air Force uses “10gs” (an acceleration equal to 109.8m/s2 ) as the... Problem 9.2CYU: Check Your Understanding What if we had assumed the phone did bounce on impact? Would this have... Problem 9.3CYU: Check Your Understanding Suppose the second, smaller cart had been initially moving to the left.... Problem 9.4CYU: Check Your Understanding Would the ball’s change of momentum have been larger, smaller, or the same,... Problem 9.5CYU: Check Your Understanding Even if there were some friction on the ice, it is still possible to use... Problem 9.6CYU: Check Your Understanding The changes of momentum for Philae and for Comet 67/P were equal (in... Problem 9.7CYU: Check Your Understanding There is a second solution to the system of equations solved in this... Problem 9.8CYU: Check Your Understanding Suppose there had been no friction (the collision happened on ice); that... Problem 9.9CYU: Check Your Understanding Suppose the initial velocities were not at right angles to each other. How... Problem 9.10CYU: Check Your Understanding Notice that the mass of the air in the tank was neglected in the analysis... Problem 9.11CYU: Check Your Understanding Suppose we included the sun in the system. Approximately where would the... Problem 9.12CYU: Check Your Understanding Suppose you have a macroscopic salt crystal (that is, a crystal that is... Problem 9.13CYU: Check Your Understanding How would the firework display change in deep space, far away from any... Problem 9.14CYU: Check Your Understanding What is the physical difference ( or relationship) between dmdt and dmgdt... Problem 1CQ: An object that has a small mass and an object that has a large mass have the same momentum. Which... Problem 2CQ: An object that has a small mass and an object that has a large mass have the same kinetic energy.... Problem 3CQ: Is it possible for a small force to produce a larger impulse on a given object than a large force?... Problem 4CQ: Why is a 10-m fall onto concrete far more dangerous than a 10-m fall onto water? Problem 5CQ: What external force is responsible for changing the momentum of a car moving along a horizontal... Problem 6CQ: A piece of putty and a tennis ball with the same mass are thrown against a wall with the same... Problem 7CQ: Under what circumstances is momentum conserved? Problem 8CQ: Can momentum be conserved for a system if there are external forces acting on the system? If so,... Problem 9CQ: Explain in terms of momentum and Newton’s laws how a car’s air resistance is due in part to the fact... Problem 10CQ: Can objects in a system have momentum while the momentum of the system is zero? Explain your answer. Problem 11CQ: A sprinter accelerates out of the starting blocks. Can you consider him as a closed system? Explain. Problem 12CQ: A rocket in deep space (zero gravity) accelerates by firing hot gas out of its thrusters. Does the... Problem 13CQ: Two objects of equal mass are moving with equal and opposite velocities when they collide. Can all... Problem 14CQ: Describe a system for which momentum is conserved but mechanical energy is not. Now the reverse:... Problem 15CQ: Momentum for a system can be conserved in one direction while not being conserved in another. What... Problem 16CQ: Suppose a fireworks shell explodes, breaking into three large pieces for which air resistance is... Problem 17CQ: It is possible for the velocity of a rocket to be greater than the exhaust velocity of the gases it... Problem 18P: An elephant and a hunter are having a confrontation. a. Calculate the momentum of the 2000.0-kg... Problem 19P: A skater of mass 40 kg is carrying a box of mass 5 kg. The skater has a speed of 5 m/s with respect... Problem 20P: A car of mass 2000 kg is moving with a constant velocity of 10 m/s due east. What is the momentum of... Problem 21P: The mass of Earth is 5.971024kg and its orbital radius is an average of 1.501011m . Calculate the... Problem 22P: If a rainstorm drops 1 cm of rain over an area of 10km2 in the period of 1 hour, what is the... Problem 23P: What is the average momentum of an avalanche that moves a 40-cm-thick layer of snow over an area of... Problem 24P: What is the average momentum of a 70.0-kg sprinter who runs the 100-m dash in 9.65 s? Problem 25P: A 75.0-kg person is riding in a car moving at 20.0 m/s when the car runs into a bridge abutment (see... Problem 26P: One hazard of space travel is debris left by previous missions. There are several thousand objects... Problem 27P: A cruise ship with a mass of 1.00107kg strikes a pier at a speed of 0.750 m/s. It comes to rest... Problem 28P: Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s butt... Problem 29P: Water from a fire hose is directed horizontally against a wall at a rate of 50.0 kg/s and a speed of... Problem 30P: A 0.450-kg hammer is moving horizontally at 7.00 m/s when it strikes a nail and comes to rest after... Problem 31P Problem 32P: The x-component of a force on a 46-g golf ball by a 7-iron versus time is plotted in the following... Problem 33P: A hockey puck of mass 150 g is sliding due east on a frictionless table with a speed of 10 m/s.... Problem 34P: A ball of mass 250 g is thrown with an initial velocity of 25 m/s at an angle of 30 with the... Problem 35P Problem 36P: Two identical pucks collide elastically on an air hockey table. Puck 1 was originally at rest; puck... Problem 37P: The figure below shows a bullet of mass 200 g traveling horizontally towards the east with speed 400... Problem 38P: A 20-kg child is coasting at 3.3 m/s over flat ground in a 4.0-kg wagon. The child drops a 1.0-kg... Problem 39P: A 4.5 kg puffer fish expands to 40 of its mass by taking in water. When the puffer fish is... Problem 40P: Explain why a cannon recoils when it fires a shell. Problem 41P: Two figure skaters are coasting in the same direction, with the leading skater moving at 5.5 m/s and... Problem 42P: A 2000-kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grain... Problem 43P: A 5.50-kg bowling ball moving at 9.00 m/s collides with a 0.850-kg bowling pin, which is scattered... Problem 44P: Ernest Rutherford (the first New Zealander to be awarded the Nobel Prize in Chemistry) demonstrated... Problem 45P: A 90.0-kg ice hockey player hits a 0.150-kg puck, giving the puck a velocity of 45.0 m/s. If both... Problem 46P: A 100-g firecracker is launched vertically into the air and explodes into two pieces at the peak of... Problem 47P: In an elastic collision, a 400-kg bumper car collides directly from behind with a second, identical... Problem 48P: Repeat the preceding problem if the mass of the leading bumper car is 30.0 greater than that of the... Problem 49P: An alpha particle (4He) undergoes an elastic collision with a stationary uranium nucleus (235U) .... Problem 50P: You are standing on a very slippery icy surface and throw a 1-kg football horizontally at a speed of... Problem 51P: A 35-kg child rides a relatively massless sled down a hill and then coasts along the flat section at... Problem 52P: A boy sleds down a hill and onto a frictionless ice- covered lake at 10.0 m/s. In the middle of the... Problem 53P Problem 54P: A billiard ball, labeled 1, moving horizontally strikes another billiard ball, labeled 2, at rest.... Problem 55P: A projectile of mass 2.0 kg is fired in the air at an angle of 40.0 to the horizon at a speed of... Problem 56P: Two asteroids collide and stick together. The first asteroid has mass of 15103kg and is initially... Problem 57P Problem 58P: A proton traveling at 3.0106m/s scatters elastically from an initially stationary alpha particle and... Problem 59P Problem 60P: A family is skating. The father (75 kg) skates at 8.2 m/s and collides and sticks to the mother (50... Problem 61P Problem 62P: Two cars of the same mass approach an extremely icy four-way perpendicular intersection. Car A... Problem 63P: Three point masses are placed at the corners of a triangle as shown in the figure below. Find the... Problem 64P: Two particles of masses m1 and m2 separated by a horizontal distance D are released from the same... Problem 65P: Two particles of masses m1 and m2 separated by a horizontal distance D are let go from the same... Problem 66P: Two particles of masses m1 and m2 , move uniformly in different circles of radii R1 and R2 R2 about... Problem 67P: Two particles of masses m1 and m2 move uniformly in different circles of radii R1 and R1 about the... Problem 68P: Find the center of mass of a one-meter long rod, made of 50 cm of iron (density 8gcm3 ) and 50 cm of... Problem 69P: Find the center of mass of a rod of length L whose mass density changes from one end to the other... Problem 70P: Find the center of mass of a rectangular block of length a and width b that has a nonuniform density... Problem 71P: Find the center of mass of a rectangular material of length a and width b made up of a material of... Problem 72P: A cube of side a is cut out of another cube of side b as shown in the figure below. Find the... Problem 73P: Find the center of mass of a cone of uniform density that has a radius R at the base, height h, and... Problem 74P: Find the center of mass of a thin wire of mass in and length L bent in a semicircular shape. Let the... Problem 75P: Find the center of mass of a uniform thin semicircular plate of radius R. Let the origin be at the... Problem 76P: Find the center of mass of a sphere of mass M and radius R and a cylinder of mass in, radius r, and... Problem 77P: (a) A 5.00-kg squid initially at rest ejects 0.250 kg of fluid with a velocity of 10.0 m/s. What is... Problem 78P: A rocket takes off from Earth and reaches a speed of 100 m/s in 10.0 s. If the exhaust speed is 1500... Problem 79P: Repeat the preceding problem but for a rocket that takes off from a space station, where there is no... Problem 80P: How much fuel would be needed for a 1000-kg rocket (this is its mass with no fuel) to take off from... Problem 81P: What exhaust speed is required to accelerate a rocket in deep space from 800 m/s to 1000 m/s in 5.0... Problem 82P: Unreasonable Results Squids have been reported to jump from the ocean and travel 30.0 m (measured... Problem 83AP: Two 70-kg canoers paddle in a single, 50-kg canoe. Their paddling moves the canoe at 1.2 m/s with... Problem 84AP: Which has a larger magnitude of momentum: a 3000-kg elephant moving at 40 km/h or a 60-kg cheetah... Problem 85AP: A driver applies the brakes and reduces the speed of her car by 20 , without changing the direction... Problem 86AP: You friend claims that momentum is mass multiplied by velocity, so things with more mass have more... Problem 87AP: Dropping a glass on a cement floor is more likely to break the glass than if it is dropped from the... Problem 88AP: Your 1500-kg sports car accelerates from 0 to 30 m/s in 10 s. What average force is exerted on it... Problem 89AP: A ball of mass m is dropped. What is the formula for the impulse exerted on the ball from the... Problem 90AP: Repeat the preceding problem, but including a drag force due to air of fdrag=bv . Problem 91AP: A 5.0-g egg falls from a 90-cm-high counter onto the floor and breaks. What impulse is exerted by... Problem 92AP: A car crashes into a large tree that does not move. The car goes from 30 m/s to 0 in 1.3 m. (a) What... Problem 93AP: Two hockey players approach each other head on, each traveling at the same speed Vi . They collide... Problem 94AP: You are coasting on your 10-kg bicycle at 15 m/s and a 5.0-g bug splatters on your helmet. The bug... Problem 95AP: A load of gravel is dumped straight down into a 30000-kg freight car coasting at 2.2 m/s on a... Problem 96AP: Two carts on a straight track collide head on. The first cart was moving at 3.6 m/s in the positive... Problem 97AP: A 100-kg astronaut finds himself separated from his spaceship by 10 m and moving away from the... Problem 98AP: Derive the equations giving the final speeds for two objects that collide elastically, with the mass... Problem 99AP: Repeat the preceding problem for the case when the initial speed of the second object is nonzero. Problem 100AP: A child sleds down a hill and collides at 5.6 m/s into a stationary sled that is identical to his.... Problem 101AP: For the preceding problem, find the final speed of the case of each sled for the case of an elastic... Problem 102AP: A 90-kg football player jumps vertically into the air to catch a 0.50-kg football that is thrown... Problem 103AP: Three skydivers are plummeting earthward. They are initially holding onto each other, but then push... Problem 104AP: Two billiard balls are at rest and touching each other on a pool table. The cue ball travels at 3.8... Problem 105AP Problem 106AP Problem 107AP: Repeat the preceding problem if the balls collide when the center of ball 1 is at the origin and the... Problem 108AP: Repeat the preceding problem if the balls collide when the center of ball 1 is at the origin and the... Problem 109AP: Where is the center of mass of a semicircular wire of radius R that is centered on the origin,... Problem 110AP: Where is the center of mass of a slice of pizza that was cut into eight equal slices? Assume the... Problem 111AP: If 1 of the Earth’s mass were transferred to the Moon, how far would the center of mass of the... Problem 112AP: You friend wonders how a rocket continues to climb into the sky once it is sufficiently high above... Problem 113AP: To increase the acceleration of a rocket, should you throw rocks out of the front window of the... Problem 114CP: A 65-kg person jumps from the first floor window of a burning building and lands almost vertically... Problem 115CP: Two projectiles of mass m1 and m2 , are fired at the same speed but in opposite directions from two... Problem 116CP: Two identical objects (such as billiard balls) have a one-dimensional collision in which one is... Problem 117CP: A ramp of mass M is at rest on a horizontal surface. A small cart of mass m is placed at the top of... Problem 118CP: Find the center of mass of the structure given in the figure below. Assume a uniform thickness of 20... Problem 20P: A car of mass 2000 kg is moving with a constant velocity of 10 m/s due east. What is the momentum of...
Related questions
A car, whose mass is 1550 kg, is travelling at 15.0 m/s. If the speed of light were 25.0 m/s, what would be the magnitude of the momentum of the car as measured by a person standing on the ground?
Definition Definition Rate at which light travels, measured in a vacuum. The speed of light is a universal physical constant used in many areas of physics, most commonly denoted by the letter c . The value of the speed of light c = 299,792,458 m/s, but for most of the calculations, the value of the speed of light is approximated as c = 3 x 10 8 m/s.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
