a golf ball of mass 0.05 kg takes 0.02 s to gain a speed of 75 km h^-1. what is the average force applied by the golf stick on the ball.
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(a)We find the impulse on the ball from
Impulse = Dp = m Dv =(0.045 kg)(45 m/s � 0) = 2.0 N·s.
(b)The average force is
F = Impulse/Dt = (2.0 N·s)/(5.0 ´ 10�3 s) = 4.0 ´ 102 N.
Impulse = Dp = m Dv =(0.045 kg)(45 m/s � 0) = 2.0 N·s.
(b)The average force is
F = Impulse/Dt = (2.0 N·s)/(5.0 ´ 10�3 s) = 4.0 ´ 102 N.
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