The policeman also watched a truck that was sitting at the red light. when the light turned green, the truck slowly started moving, getting faster and faster until it was going a constant velocity. what do you think the motion graphs looked like? explain why you think they look this way.

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?