Two identical sleds slide down two frictionless hills, each starting from rest at the top of its own hill. The first sled slides down a hill that is taller but has a gradual slope. The second sled slides down a hill that is shorter but has a steeper slope. Which sled has the greatest speed when it reaches the bottom of the hill?

Q: 15. A stone slides down each of the three frictionless ramps, as shown in the figure. For which ramp…

A: From conservation of energy potential energy at top = kinetic energy at bottom As the object is same…

Q: The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a…

A: The mass of the lighter box = 8 kg.The mass of the heavier box = 35 kg.The distance between point A…

Q: A 2.0 lb. rock and a 20.0 lb. rock are dropped from rest at 50.0 m above the ground. Ignoring air…

A: Mass of rock 1: m1 = 2.0 lb = 0.907 kg Mass of rock 2 : m2 = 20.0 lb = 9.07 kg Height of building: h…

Q: The engine in an imaginary sports car can provide constant power to the wheels over a range of…

A: Initial speed = 0 mph It can reach 32 mph in 1.2 seconds To find = Time required to accelerate from…

Q: A sled is initially at rest at the top of a hill at an elevation 55.0 m higher than the elevation at…

A:

Q: A package with a mass of 40.0 kg slides down a smooth ramp with negligible friction. The package…

A:

Q: A sled and a rider together have a combined mass of 87 kg. They slide from rest down a frictionless…

A:

Q: accelerates from rest to a velocity of 40 m/s in 5.0 seconds. The brakes

A:

Q: What effect do external forces like an applied force, friction force, or drag force have? O They…

A: Any external force acting on the system acts in such a way that the total mechanical energy of the…

Q: A box with mass m = 1.5 kg is sliding with a speed of 4.0 m/s on a horizontal surface. When at x =…

A: From work-energy theorem:

Q: 16. A roller coaster engineer (yes, there is such a thing) is considering three different designs…

A: The three different designs for roller coaster are represented as : "X" , "Y" , "Z". The initial and…

Q: The engine in an imaginary sports car can provide constant power to the wheels over a range of…

A: The formula of power:

Q: A hockey puck is at the top of a 10 m long slippery slope, that makes an angle of 30° to the…

A: h= 10 m v= 5 m/s First, find the verticle height  H= h sin θH=10 sin 30H =5 m   For the conservation…

Q: "A car on a roller coaster starts at zero speed at an elevation above the ground of 26 m. It coasts…

A:

Q: Which of the following is TRUE to an object thrown straight upward? A. The object’s kinetic energy…

A:

Q: A 30.1 kg child on a sled slides down a hill, reaching a speed of 6.65 m/s. How high was the hill…

A: Given, Mass of child,m=30.1 kg Speed,v=6.65 m/s

Q: A kid on a bike goes from the bottom to the top of a 25 m hill. What minimum speed would the kid…

A: h=25 m.

Q: A car slams on its brakes and slows down. The work done by the brakes on the car must be a)…

A: Let the mass of car = m Let the initial velocity = u Let the final velocity = v It is given that…

Q: A 108 kg man is skiing across level ground at a speed of 9.5 m/s when he comes to the small slope…

A: M= 108 kg  U= 9.5 m/s  Angle is 8.62° ( by trigonometry)

Q: A skiier is moving at a speed of 2.50 m/s when passing the starting line on a hill that initially…

A: Consider the diagram for the motion of the skier on the hill.

Q: You are driving a 1000 kg car in a race against a monster truck (10000 kg) and a clown car (300 kg).…

A:

Q: At an amusement park, a swimmer uses a water slide to enter the main pool. You may want to review…

A:

Q: "Two identical balls are thrown directly upward, ball A at speed v and ballB at speed 2v, and they…

A: Given data- Speed of ball A is = V Speed of ball B is =2V At maximum height final velocity of both…

Q: The person is roller skates so friction can be ignored. They are traveling at 2.0 m/s beginning the…

A:

Q: A hand pushes block A (m= 3 kg) with a constant force Nand. A= 75 N for a distance Ax = 2 m along a…

A:

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A: Given values: Equation of y, y=x2d           for x<0y=-x2d       for x>0 Value for d = 2.10 m…

Q: A frustrated physics student throws her physics text straight down with a speed of 15 m/s from a 50…

A: Height of the bridge h=50 m The vertical displacement of the book y=-h=-50 m Speed of the book in…

Q: In a contest, two tractors pull two identical blocks of stone the same distance over identical…

A: Given: The block is identical. The distance travelled by each block is the same. The speed of block…

Q: 4) The total mass of the sled and the driver on it in the figure is 125 kg. The driver is moving up…

A: Explanation and solution shown in the picture below

Q: A block is launched up a frictionless 40° slope with an initial speed v and reaches a maximum…

A: solution- The blocks reaches the same maximum vertical height 'h'. option-(1) is correct.…

Q: A sled and a rider together have a combined mass of 87 kg. They slide from rest down a frictionless…

A:

Q: As shown in the figure below, a box of mass m = 26.0 kg is sliding along a horizontal frictionless…

A: Given, mass of box =26.0 kg initial speed = 7.20 m/s angle of inclined = 27.0 degree coefficient of…

Q: A rock slides up a very slippery ramp which is tilted at an angle 0 above horizontal. It has speed…

A: The rock will stop when final velocity becomes 0 at max distance from bottom. Having this concept we…

Q: 2. A 1 kg ball is released from a height of 6 m. A 2 kg ball is released from a height of 3m. If…

A: Mass of first ball (m) = 1 kg Initial height of first ball (h) = 6 m Mass of second ball (M) = 2 kg…

Q: An Atwood's machine consists of two different masses, both hanging vertically and connected by an…

A: Given:  The relation between the mass of two blocks is, M2=2M1. Let's consider the speed of the…

Q: 1) 4 m/s A cart starting from rest rolls down a hill and at the bottom has a speed of 4 m/s. If the…

A:

Q: Two balls are thrown off a building with the same speed,one straight up and one at a 45° angle.…

A: Since the initial velocity of both the balls are same ,the kinetic energy of them is equal.Similarly…

Q: A kid on a bike with a combined mass of 100 kg. goes 7 m/s at the top of a hill. The hill has a…

A: Apply the energy conservation equation between the top and the bottom of the hlll. Here, vt is the…

Q: Swimmers at a water park have a choice of two frictionless water slides as shown in the figure.…

A: Introduction: According to the conservation of energy, the initial energy of a system is equal to…

Q: An object starts from rest and moves a distance d due to the presence of a net force F_net. If the…

A: Option- a is correct answer. Since change in kinetic energy produced work done . So E=F×d Where E =…

Q: A cart moves to the right along a frictionless track. What is the minimum speed of the cart at…

A: Given : Cart traveling to the right through the frictionless track.

Q: Two boxes, Box A and Box B, are given an initial push and start moving at equal speed along a level,…

A: Given mass of box B is twice the mass of box A let m be mass of A Mass of box B is "2m" As the boxes…

Q: A 500. kg pig is standing at the top of a muddy hill on a rainy day. The hill is 100.0 m long with a…

A: The pig has Potential Energy at the top of the hill. As it rolls down, the Potential energy is…

Q: A train accelerates from 100 m/s west to 170 m/s      west in 10 seconds. What is the acceleration…

A: We have to solve following three questions. -A train accelerates from 100 m/s west to 170 m/s west…

Q: 100 m 450 45 m 30 m A skier starts at rest on the frictionless slope shown, 100 m above ground…

A: Given Motion start by skier from 100 m height as shown in the figure. All surfaces are smooth. We…