The tables in a room have a height of around 95 cm. A person jumping from such a height lands with a velocity of about 4.3 m/s. What is the magnitude of the impulse necessary to stop a 70 kg person who jumps from one of the tables?

When he bends his knees, he comes to a stop in about 0.1 second. What is the average force on him during this time?

Round your answer to the nearest N.

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When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.