Paola can flex her legs from a bent position through a distance of 20.1 cm. Paola leaves the ground when her legs are straight, at a speed of 4.00 m/s.
Calculate the magnitude ay of her acceleration, assuming that it is constant.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?