During which type of collision is none of the energy converted to sound energy?
O A. Inelastic
O B. Perfectly inelastic
O C. All collisions
O D. Elastic

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

Which is a substance that can be separated by physical means and is not the same throughout