S2. (5 pts) A baseball pitcher of mass 80 kg at rest pitches a baseball of...

Question

Question

S2. (5 pts) A baseball pitcher of mass 80 kg at rest pitches a baseball of mass 0.15 kg at 50 m s-1 towards home plate. Throw

Answer 1

Answer #1

mass of pitcher = 80 kg

mass of baseball = 0.15 kg

velocity of baseball = 50 m/s

As the system is at rest before throwing.

Before momentum = 0

Before momentum = After momentum

0 = mass of pitcher × recoil velocity + mass of baseball × velocity of baseball

0 = 80 × recoil velocity + 0.15 × 50

recoil velocity = -0.09375 m/s

-ve sign shows opposite direction.

Answer 2

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