The cheetah, the fastest land animal, can sprint at 30 m/s. Could the cheetah get a speeding ticket on a highway where the speed limit is 55 mph?

The plum pudding model of the atom state that ?

What is the final velocity of the initial velocity of 25 and -50?

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?