MCQ question 20An object with a mass of 500 g is released from a height of 50 m. Since the airfriction is negligible whatground? Assume that g = 10 m/s2.the kinetic energy of the object when it hits thea)200 jb) 150 j300 J250)e)100jBoş bırakKOnceki20/20Sonraki>КарatSinavı Bitir

Given:- The mass of the object = 500 kg height = 50 m…

Answered: 20 An object with a mass of 500 g is…

20 An object with a mass of 500 g is released from a height of 50 m. Since the air friction is negligible what is the kinetic energy of the object when it hits the ground? Assume that g = 10 m/s?.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter6: Energy Of A System

Section: Chapter Questions

Problem 8CQ

See similar textbooks

Related questions

Q: 2. A person pushes a 10 kg cart from rest a distance of 5 m with a constant horizontal force of 10…

A: (a)The change in kinetic energy is equal to the work done.

Q: 8. How much work is required to raise a 100g block to a height of 200 cm and simultaneously give it…

A: Given data: Mass (m) = 100 g = 0.100 kg Height (h) = 200 cm = 2.00 m Initial velocity (v0) = 0 m/s…

Q: 5) A ball drops some distance and gains 25 J of kinetic energy. Do NOT ignore air resistance. How…

A: a ball drops some distance and gains kinetic energy of 25J air resistance is not neglected

Q: 5. An elevator has mass of 600 kg, not including passengers The elevator is designed to ascend at…

Q: 4. A car with mass of 1400 Kg has a net forward force of 4500 N applied to it. The car starts from…

A: mass = 1400 kgnet forward force = 4500 N u = 0 ( initial speed)d = 100 m

Q: 7. A 210-kg roller coaster reaches the top of the steepest hill with a speed of 5.20 km/h. It then…

A: The expression for the force acting on the roller coaster along the incline of the hill is,

Q: done

Q: **47. A ball is dropped from rest from the top of a 6.10-m-tall building, falls straight downward,…

A: Let the total mechanical energy of the ball is given as, After two bounces, After two bounces,…

Q: 8. Describe an object that has a lot of kinetic energy, but not much speed.

A: The kinetic energy of an object is given as, K=12mv2 Here, m denotes the mass and v denotes the…

Q: 1.) A car accelerates from rest with a constant acceleration of 3 ?/?2 over a distance of 10 meters.…

A: The force acting on the car is given by, F=ma Here, m is the mass of the car and a is the…

Q: At what speed does a 1200 kg compact car have the same kinetic energy as a 19000 kg truck going 25…

A: Note: 1m/s = 18/5 km/h

Q: 8. An applied force of 92 N is exerted horizontally on an 18 kg box. The coefficient of kinetic…

A: Given data *The given applied force exerted horizontally on the box is F = 92 N *The mass of the box…

Q: 2. A 1200 kg car is moving at 30 m/s and speeds up to 35 m/s. Find the work done on the car.

A: According to the work energy theorem, the work done is equal to the change in Kinetic energy,…

Q: 12. A shot-put is raised 4.00 m off the ground and has a potential energy of 7 050 J. What is the…

A: Given Data : The potential energy of the shotput is given as PE = 7050 J. The height attained by the…

Q: 55. A constant 10-N horizontal force is applied to a 20-kg cart at rest on a level floor. If…

A: Solution: First find acceleration (a) using, F= ma Then use ( a ) to find velocity of cart using,…

Q: 13. A 4.50-kg child is swinging on a swing. If she is released from rest at a point 1.45 m above the…

Q: 17. A 10.0-kg rocket is fired vertically from Cape Canaveral. Its fuel gives it a kinetic energy of…

Q: 66. Go A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The…

Q: 27) A 3.0 kg block is on a horizontal surface. The block is at rest when at t = 0 sec a force with…

Q: 7. A ball is thrown straight up. Neglecting air resistance, which statement is not true regarding…

A: A ball is thrown straight up with some initial velocity. Air resistance is neglected.

Q: 76. A cable lifts a 1200-kg elevator at a constant velocity for a distance of 35 m. What is the work…

A: To determine: (a) The work done by the tension in the cable. (b) The work done by the elevator’s…

Q: 8. Calculate the power required of a 1400kg car under the following circumstances: (a) the car…

A: a) Let the force F required to speed up the car. This can be calculated using Newton’s second law of…

Q: 2. A car with an initial velocity of 36 km/h accelerates at 54 km/h² for 3600 s. By which factor…

Q: 1. The shot is 1.2 m above the ground at 10 m/s when a shot-putter fires a 5 kg shot. It reaches 5 m…

A: Initial kinetic energy = (1/2)×mv2 Ki = (1/2)×5×102 = 250 J Initial potential energy = mgh Ui =…

Q: 20. An 845-N sled is pulled a distance of 185 meters. The task requires 1.20 x 104 J of work and is…

A: Given data: The weight of sled is W=845 N. The distance traveled by the sled is d=185 m. The work…

Q: 90. What happens to the kinetic energy of a moving object if the net work done is negative? * a. The…

A: Explanation: When negative work is done on a moving object, the direction of the force on the object…

Q: 6.The engine of a 1500 kg automobile has a power rating of 75 kW. Determine the time required to…

A: Given: Mass of the engine = 1500 Kg Power rating = 75 KW speed = 100 Km/hr

Q: A 2500 kg car accelerates from rest to a velocity of 30.0 m/s in 8.00 seconds. The work done by the…

A: Given Data : Mass of car M = 2500 Kg Velocity of Car V = 30m/s Initial Velocity of Car u= 0 work…

Q: 2. A spring stretches by 18.5 cm when a bag of potatoes weighing 67 N is suspended from its end. How…

Q: 6. A quarterback throws a football weighing 300 g at a speed of 3.78 m/s at a height of 0.5 meter.…

A: Given: The mass of the ball is 300 g. The initial speed of the ball is 3.78 m/s. The height of the…

Q: 3. A cheetah has 5 joules of kinetic energy and runs up a 5 m hill. When it gets to the top of the…

A: Law of conservation of energy: It states that “The energy cannot be created nor be destroyed it can…

Q: 46.3-g golf ball is driven from the tee with an initial speed of 44.8 m/s and rises to a height of…

A: Given Initial velocity u = 44.8 m/s Mass m = 46.3 g = 46.3 ×10-3 kg Maximum height H = 20.5 m

Q: 3) A student throws a 0.22 kg rock horizontally at 20.0 m/s from 10.0 m above the ground. Ignore air…

A: Given data: The mass of rock is m=0.22 kg. The horizontal speed of rock is v=20.0 m/s. The height…

Q: 3. Determine the work done by gravity on a 5 kg bowling ball if the bowling ball.. a) Falls straight…

A: Part A. Mass of the ball = m = 5 kg Displacement travel when falls straight down = d = 8 m…

Q: 32. A pole-vaulter just clears the bar at 5.80 m and falls back to the ground. The change in the…

A: Given data The height is h=-5.80 m The potential energy is EP=-3.70×103 J The potential energy is,…

Q: 1. A 2 kg block slides on a frictionless surface at 10 m/s. How much kinetic energy does it have?

A: Given data: Mass (m) = 2 kg Velocity (v) = 10 m/s Required: Kinetic energy (KE)

Q: 1. A 60 kg person runs up the stairs 12 meters high for 3 minutes. Determine the power.

A: GIven :m=60 kgh=12mt=3 min =180s

Q: 14. A hiker wearing a backpack stands on a hill at an altitude of 50 m, which would decrease the…

A: Gravitational PE = Mass x Height x g If hiker moves up the hill, H increases so gravitational PE…

Q: 4. Identify a case where an object is moving over a surface with friction, but the frictional force…

A: The frictional force is the force that acts between the surface of contacts between two objects.…

Q: A 47.0 g golf ball is driven from the tee with an initial speed of 58.0 m/s and rises to a height of…

A: Given, Mass of golf ball = 47.0 g = 0.047 kg Speed = 58.0 m/s Height = 24.0 m

Q: 8. A block slides along a rough incline. Its total mechanical energy (E) and potential energy (U)…

A: when the body moves on an inclined surface, the work done by the body by frictional force is a…

Q: 8) An electric motor with an output of 25kW provides a power for the elevator of a seven-story…

Q: 3. A rollercoaster car with a mass of 300 kg is at the top of a rollercoaster track at a height of…

A: Data given , Mass of the rollercoaster car (m) = 300 kg Height (h) = 60 m Energy loss due to…

Q: 3. How much work is done by a force of 50 N that acts on the block at an angle of 35° from the…

A: The free-body diagram of the block is shown below. Here, F is the applied force.

Q: 7. A ball is thrown straight up. Neglecting air resistance, which statement is not true regarding…

Q: 2. A bowling ball is lifted to a height such that its gravitational potential energy is 20 joules…

A: Given that The gravitational potential energy (U) = 20J since it is release from…

Q: 2. A seagull is trying to eat a 5.8 kg crab it picked up from the beach and it needs to break the…

A: Given data: The mass of crab is m=5.8 kg. The kinetic energy is KE=12.5 J.

Concept explainers

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.

Question

MCQ question

20
An object with a mass of 500 g is released from a height of 50 m. Since the air
friction is negligible what
ground? Assume that g = 10 m/s2.
the kinetic energy of the object when it hits the
a)
200 j
b) 150 j
300 J
250)
e)
100j
Boş bırak
KOnceki
20/20
Sonraki>
Карat
Sinavı Bitir

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

The force exerted by a diving board is conservative, provided the internal friction is negligible. Assuming friction is negligible, describe changes in the potential energy of a diving board as a swimmer drives from it, starting just before the swimmer steps on the board until just after his feet leave it.
Consider the following scenario. A car for which friction is not negligible accelerates from rest down a hill, running out of gasoline after a short distance. The driver lets the car coast farther down the hill, then up and over a small crest. He then coasts down that hill into a gas station, where he brakes to a stop and fills the tank with gasoline. Identify the forms of energy the car has, and how they are changed and transferred in this series of events. (See Figure 7.34.) Figure 7.34 A car experiencing non-negligible friction coasts down a hill, over a small crest then dill again, and comes to a stop at a gas station.
(a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running at 10.0 m/s? (b) Discuss how the larger energies needed for the movement of larger animals would relate to metabolic rates.
A 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile) and encounters an average frictional force of 1200 N. What is its average power output in watts and horsepower if this takes 7.30s?
The swimmer shown in Figure 7.44 exerts an average horizontal backward force of 80.0 N with his arm during each 1.80 m long stroke. (a) What is his work output in each stroke? (b) Calculate the power output of his arms if he does 120 strokes per minute. Figure 7.44
A block of mass m = 5.00 kg is released from point and slides on the frictionless track shown in Figure P7.6. Determine (a) the blocks speed at points and and (b) the net work done by the gravitational force on the block as it moves from point to point . Figure P7.6
How much work is done by the boy pulling his sister 30.0 m in a wagon as shown in Figure 7.36? Assume no friction acts on the wagon. Figure 7.36 The boy does work on the system of the wagon and the child when he pulls them as shown.
The particle described in Problem 71 (Fig. P5.71) is released from point A at rest. Its speed at B is 1.50 m/s. (a) What is its kinetic energy at B? (b) How much mechanical energy is lost as a result of friction as the particle goes from A to B? (c) Is it possible to determine from these results in a simple manner? Explain.
Integrated Concepts A 105-kg basketball player crouches down 0.400 m while waiting to jump. After exerting a force on the floor through this 0.400 m, his feet leave the floor and his center of gravity rises 0.950 m above its normal standing erect position. (a) Using energy considerations, calculate his velocity when he leaves the floor. (b) What average force did he exert on the floor? (Do not neglect the force to support his weight as well as that to accelerate him.) (c) What was his power output during the acceleration phase?
A 5.0-kg block is pushed 3.0 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of = 30 with the horizontal, as shown in Figure P5.76. If the coefficient of kinetic friction between block and wall is 0.30, determine the work done by (a) , (b) the force of gravity, and (c) the normal force between block and wall, (d) By how much does the gravitational potential energy increase during the blocks motion? Figure P5.76
Consider the following scenario. A car for which friction is not negligible accelerates from rest down a hill, running out of gasoline after a short distance (see below). The driver lets the car coast farther down the hill, then up and over a small crest. He then coasts down that hill into a gas station, where he brakes to a stop and fills that tank with gasoline. Identify the forms of energy the car has, and how they are changed and transferred in this series of events.
Estimate the kinetic energy of a 90,000-ton aircraft carrier moving at a speed of at 30 knots. You will need to look up the definition of a nautical mile to use in converting the unit for speed, where 1 knot equals 1 nautical mile per hour.