mocampo

A roller coaster cart is pulled up to the top of the hill 45 m high before it plunges down to its lowest point, 5 m above the ground. What is the cart’s speed at this point? What is its potential energy if the mass of the object is 5 kg?

A crane lifts a 1800-kg load of scrap metals to a distance of 15 m in 20 s. how much power is used in delivering the load?

A 23.5 N force acts on a body for duration of 12.0 s. Compute the impulse that the body receives.

What is the magnitude of the momentum of a 10,000-kg truck whose speed is 12.0 m/s? What is the kinetic energy?