Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 25 watts find the work done in the time it takes to do the work

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) determine the magnitude and direction of projectile velocity at t= 1.3s b) determine the magnitude and direction of projectile acceleration at t=1.3s

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.