Malcolm explains to his brothers the difference between acceleration and velocity while watching TV. He explains that, at any given moment, the Earth is rotating at 1,000 MPH and traveling at almost 67,000 MPH.
Beakman explains momentum and states the formula. He demonstrates momentum by rolling a bowling ball and a baseball down the same ramp so they have the same velocity. Their momentum is measured by liquid in a bag raising up on a scale. If the baseball has increased velocity, then this can increase the momentum.