Question
A ball having a mass of 0.5 kg is moving towards the east with a speed of 8.0 ms-1. After being hit by a bat it changes its direction and starts moving towards the north with a speed of 6.0 ms−1. If the time of impact is 0.1 s, calculate the impulse and average force acting on the ball.
Answer :
Word Count : 239
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Skip in 10
Momentum of a ball is
where is a mass of the ball, 
is a velocity of the ball. Momentum 
is a vector having the same direction as the velocity 
.
Impulse is the change in momentum
where subscripts i and fmean the initial and finalvalues. Let the direction to the east be the x axis, and the direction to the north be
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