Question

Q.1.Write the law of conservation of momentum.

Q.2.Why does an air filled rubber balloon swing here and there when air escapes from the mouth of it.?

Q.3.Why a rocket moves in forward direction on ignition?

Q.4. Complete the equation of conservation of momentum for two objects A and B moving with different

velocities along straight line: ______+ mB uB = mA vA + ______

Q.5.During collision, Ball ‘A’ exerts force FAB on ball ‘B’, and ball ‘B’ exerts force______ on ball A. These

two forces must be _____________ and ______ to each other.(fill in the blanks)​

Answer 1

Answer:

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Answer 2

Answer:

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Explanation:

If a balloon filled with compressed air and its mouth untied is released with its mouth in the downward direction, the balloon moves in the upward direction because the air present in the balloon rushes out in the downward direction. The equal and opposite reaction of downward going air pushes the balloon upwards.