Astudent throws a ball horizontally at 25 meters per second from a cliff 45 meters above the level ground. how far from the base of the cliff does the ball hit the ground? (neglect air resistance)

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.