How fast must a 0.142-kg baseball move in order to have the same momentum as the bus?

Momentum is the product of mass and velocity of a body. In this case, the bus has a mass of 18200 kg and moving with a velocity of 10 m/s.

Therefore, the momentum of the bus will be, 18200*10 = 182,000 kgm/s.

Thus a ball of mass 0.142 kg will require to travel with a speed of;

= 182000/0.142

= 1.282 * 10∧6 m/s to have the same momentum with the bus.