Question

A tennis ball of mass 250g hits on a tennis bat with the velocity 5m/s. Calculate the change in momentum if the ball bounces back on the same path with the same speed .​

Answer 1

Given - Mass: 250 grams

            Velocity: 5 m/s

 

Solution - Change in momentum can be calculated by using the formula = m(V2 - V1). In the formula, m stands for mass, V2 stands for final velocity and V1 stands for initial velocity.

Mass in Kilogram = 0.25 Kilogram

Now, speed remains the same only direction changes. Thus, negative sign will be added.

Change in momentum = 0.25*(-5-5)

Change in momentum = 0.25*-10  

Change in momentum = -2.5 kg m/s

So, the change in momentum is -2.5 kg m/s.

Hope it will help you out :)

Answer 2

Answer:

Here is your answer but ATQ, you have to write m=250g inplace of m=200g and velocity=5m/s inplace of 10m/s then your right answer will come.

Explanation:

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