Apitcher claims he can throw a 0.148-kg baseball with as much momentum as a 2.00-g bullet moving with a speed of 1.50 ✕ 103 m/s. (a) what must the baseball's speed be if the pitcher's claim is valid? m/s (b) which has greater kinetic energy, the ball or the bullet? the bullet has greater kinetic energy. the ball has greater kinetic energy. both have the same kinetic energy

(a) The mass of the bullet is  and its speed is , so its momentum is


The pitcher claims that he can throw the ball with the same momentum p of the ball. Since the mass of the ball is m=0.148 kg, this means that the velocity of the ball must be:


(b) The kinetic energy of the bullet is:


while the kinetic energy of the ball is:


So, the bullet has greater kinetic energy than the ball.

The rearrangement of particles in a physical change. hope this