There is a bell at the top of a tower that is 45 m high. The bell has 450J of energy. Calculate the mass.

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory

Based on the image below what would an observer on the nighttime side of earth observe?

A36,287 kg truck has a momentum of 907,175 kg • . what is the truck’s velocity