Questions from College Physics

Q: In 1865 Jules Verne proposed sending men to the Moon by firing

In 1865 Jules Verne proposed sending men to the Moon by firing a space capsule from a 220-m-long cannon with final speed of 10.97 km/s. What would have been the unrealistically large acceleration expe...

Q: A truck covers 40.0 m in 8.50 s

A truck covers 40.0 m in 8.50 s while uniformly slowing down to a final velocity of 2.80 m/s. (a) Find the truck’s original speed. (b) Find its acceleration.

Q: A space explorer is moving through space far from any planet or

A space explorer is moving through space far from any planet or star. He notices a large rock, taken as a specimen from an alien planet, floating around the cabin of the ship. Should he push it gently...

Q: A speedboat increases its speed uniformly from υi = 20.0

A speedboat increases its speed uniformly from υi = 20.0 m/s to υf = 30.0 m/s in a distance of 2.00 x 102 m. (a) Draw a coordinate system for this situation and label the relevant quantities, includin...

Q: A Cessna aircraft has a liftoff speed of 120. km/

A Cessna aircraft has a liftoff speed of 120. km/h. (a) What minimum constant acceleration does the aircraft require if it is to be airborne after a takeoff run of 240. m? (b) How long does it take th...

Q: An object moves with constant acceleration 4.00 m/s2

An object moves with constant acceleration 4.00 m/s2 and over a time interval reaches a final velocity of 12.0 m/s. (a) If its original velocity is 6.00 m/s, what is its displacement during the time i...

Q: In a test run, a certain car accelerates uniformly from zero

In a test run, a certain car accelerates uniformly from zero to 24.0 m/s in 2.95 s. (a) What is the magnitude of the car’s acceleration? (b) How long does it take the car to change its speed from 10.0...

Q: A jet plane lands with a speed of 100 m/s

A jet plane lands with a speed of 100 m/s and can accelerate at a maximum rate of -5.00 m/s2 as it comes to rest. (a) From the instant the plane touches the runway, what is the minimum time needed bef...

Q: Speedy Sue, driving at 30.0 m/s,

Speedy Sue, driving at 30.0 m/s, enters a one-lane tunnel. She then observes a slow-moving van 155 m ahead traveling at 5.00 m/s. Sue applies her brakes but can accelerate only at -2.00 m/s2 because t...

Q: A record of travel along a straight path is as follows:

A record of travel along a straight path is as follows: 1. Start from rest with a constant acceleration of 2.77 m/s2 for 15.0 s. 2. Maintain a constant velocity for the next 2.05 min. 3. Apply a const...