Question

A ball of mass m moving with velocity v strikes on
a vertical wall and rebounds back with the same speed.
What is the change in momentum of the ball​

Answer 1

Answer:

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Answer 2

Answer:

$-5 \: kg \: m/s$

Explanation:

In the above question given that mass is 1 kg, Intial velocity is 10 m/s and final velocity is 5 m/s. So,

As we know that

→ Change in momentum = mv - mu

→ Change in momentum = m(v - u)

→ Change in momentum = 1(5 - 10)

→ Change in momentum = 1 × (-5)

→ Change in momentum = -5 kg m/s

Hence, the magnitude of change in momentum is -5 kg m/s.