Questions from College Physics

Q: A 1.50 x 103 - kg car starts from rest

A 1.50 x 103 - kg car starts from rest and accelerates uniformly to 18.0 m/s in 12.0 s. Assume that air resistance remains constant at 4.00 x 102 N during this time. Find (a) The average power develop...

Q: The force acting on a particle varies as in Figure P5.

The force acting on a particle varies as in Figure P5.59. Find the work done by the force as the particle moves (a) From x = 0 to x = 8.00 m, (b) From x = 8.00 m to x = 10.0 m, and (c) From x = 0 to x...

Q: An object of mass 3.00 kg is subject to a

An object of mass 3.00 kg is subject to a force Fx that varies with position as in Figure P5.60. Find the work done by the force on the object as it moves (a) From x = 0 to x = 5.00 m, (b) From x = 5....

Q: The force acting on an object is given by Fx = (

The force acting on an object is given by Fx = (8x - 16) N, where x is in meters. (a) Make a plot of this force vs. x from x = 0 to x = 3.00 m. (b) From your graph, find the net work done by the force...

Q: An outfielder throws a 0.150 - kg baseball at a

An outfielder throws a 0.150 - kg baseball at a speed of 40.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion?

Q: A boy standing at one end of a floating raft that is

A boy standing at one end of a floating raft that is stationary relative to the shore walks to the opposite end of the raft, away from the shore. As a consequence, the raft (a) Remains stationary, (b)...

Q: A roller - coaster car of mass 1.50 x 103

A roller - coaster car of mass 1.50 x 103 kg is initially at the top of a rise at point Ⓐ. It then moves 35.0 m at an angle of 50.0° below the horizontal to a lower point Ⓑ. (a) Find both the potentia...

Q: A ball of mass m = 1.80 kg is released

A ball of mass m = 1.80 kg is released from rest at a height h = 65.0 cm above a light vertical spring of force constant k as in Figure P5.64a. The ball strikes the top of the spring and compresses it...

Q: An archer pulls her bowstring back 0.400 m by exerting

An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero to 230 N. (a) What is the equivalent spring constant of the bow? (b) How much work does the archer do...

Q: A block of mass 12.0 kg slides from rest down

A block of mass 12.0 kg slides from rest down a frictionless 35.0° incline and is stopped by a strong spring with k = 3.00 x 104 N/m. The block slides 3.00 m from the point of release to the point whe...