What is the mass of a piece of silver that when dropped into a 100.0ml graduate cylinder cause the water level to rise from 12.65ml to 18.76 ml?

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.