The graph below approximates the force applied to a tennis b

The graph below approximates the force applied to a tennis ball by a racket during the time they are in contact. What impulse does the ball receive from the racket?

Solution

Here impulse is given by

Impulse= area under the graph

I=A₁+A₂+A₃

Area of traingle A=(1/2)bh

Area of rectangle =L*W

I=(1/2)*60*0.02 +0.02*60+(1/2)*0.02*60

I=2.4 N-s