A40 kg skier starts at the top of a 12 meter high slope. at the bottom, she is traveling 10 miles. how much energy does she lose to friction?

Avalue that describes how heavy an object is and is related to the force of gravity is

Why are graphs useful when interpreting data

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?