A ball is dropped from a height of 20 meters. At what height does the ball have a velocity of 10 meters/second? A.
5.1 meters
B.
9.8 meters
C.
25 meters
D.
15 meters

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n