Acar has an initial velocity of 45m/s and a final velocity of 0m/s 9 seconds later.
a. what is the acceleration?
b. how far did they travel during the 9s?

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

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

You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.