To warm up for a match, a tennis player hits the 58.0 g ball vertically with her racket. if the ball is stationary just before it is hit and goes 5.50 m high, what impulse did she impart to it?

Explanation:

Given that,

Mass of the ball, m = 58 g

To find,

Impulse did she impart to it

Solution,

Let u is the initial speed of the ball. Using equation of kinematics as :

At 5.5 m, v = 0

So,

Here, a = -g

u = 10.38 m/s

Since, the ball is stationary just before it is hit,

According to impulse- momentum theorem, the impulse imparted is equal to the change in momentum. So,

So, the impulse did impart to it is 0.602 kg-m/s. Hence, this is the required solution.

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