What will happen to the density of air if its temperature increased?

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)

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