Question

Heya guys

Please answer these questions !!!!​

Answer 1

hey mate, here is ur answer of all questions in attached pic.and answer of 7 th question is

Conservation of momentum

Force= rate of change of momentum

f=dp/dt

Fab = ma(va-ua)

similarly Fba=mb(vb-ub)

Now acc. to newton third law every action has opposite reaction

Fab=-Fba

fill their values as written above

and answer will be

MaVa+MbVb=MbUb+MaUa

total final momentum = total initial momentum

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Answer 2

Answer:

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