A ball with a mass of 0.15 kg rolling at 2.7 m/s rolls down into a ditch that is 2.2 m deep. Assuming a complete transformation of energy, what is the ball's velocity at the bottom of the ditch?

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

Asher cycles 12 miles in 16 hours. what is his speed?

Oxygen and hydrogen gas are at the same temperature t.what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.