Question

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Answer 1

p=mv

=m×root 2gh

=m root2gh in upwards direction

Answer 2

Answer:

2m√2gh - Option(C)

Explanation:

The marble is dropped from height h then the velocity of the marble on reaching the ground is √2gh

Since it is given that it rebounds to the same height after striking the ground

. Hence the change in velocity will be given as:

Δv = √2gh - (-√2gh)

Hence the change is velocity is 2√2gh

Therefore change in momentum = m * ( change in velocity ) .

= m(2√2gh)

= 2m√2gh

Hope it helps!Brainliest it Brother