batman recharges his bat taser with 2500 joules of energy in 15 minutes. how much power does it draw from the mains

What happens to the velocity of the car when the upward pull of the cable is greater than the downward pull of gravity as the car rises toward the top?

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.)