Please help A rock is thrown horizontally from a cliff at 40 m/s. If the rock lands 155 meters from the base of the cliff. How long was the rock in the air?

Which surface feature of the moon is characterized by mountainous areas? terrae craters maria regolith

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a. the kinetic energy increases. b.the kinetic energy decreases. c.the kinetic energy remains the same. d.the kinetic energy is always zero.