Question Detail
Question
A bat strikes a ball with an average force of 80 N over a time of 12 ms. If the mass of the ball is 200 g, what will be its velocity?
Correct Answer
Option D is the correct answer.
Detailed Explanation
Impulse = FΔt = 80 × 0.012 = 0.96 N·s. Impulse = change in momentum = mΔv. Assuming ball starts from rest, v = impulse/m = 0.96 / 0.2 = 4.8 m/s.
Hint
Impulse = FΔt = Δp = mΔv.