A child plays with a stone tied to a string and starts swinging it in a circle of radius 2 m at a constant speed of 8 m/s. Calculate the
centripetal acceleration of the stone.

How is the gravitational force related to the distance between two objects?

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

What is the speed of an object at a given moment?