Q1 of 42 Page 29

A ball is travelling with uniform translatory motion. This means that

As we know, uniform translatory motion is defined as if all the particles of body moves in same straight line i.e. direction will be constant and with the same velocity.

So from above definition we can say that option (a) is totally wrong, option (b) is also wrong because option talking about circular path & option (d) is obviously wrong.


Therefore, option (a) is correct.

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2

A metre scale is moving with uniform velocity. This implies

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A cricket ball of mass 150 g has an initial velocity u = (3î + 4ĵ) m s-1 and a final velocity V = -(3î + 4ĵ) m s-1 after being hit. The change in momentum (final momentum-initial momentum) is (in kg m s1)

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In the previous problem (5.3), the magnitude of the momentum transferred during the hit is

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