Which sentence describes an object that has kinetic energy?

a seagull sits on top of a fence post.

a beach ball is round.

a radio has batteries with stored chemical energy.

a boat sails across the ocean.

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2