Home Physics Newton's Laws of Motion Conservation of Linear Momentum Impulse A particle of mass 70 g moving at 50 cm/s, i…
Physics Newton's Laws of Motion Conservation of Linear Momentum Impulse MCQ (Single Correct)

A particle of mass 70 g moving at 50 cm/s, is acted upon by a variable force opposite to direction of its motion. Force F is shown as a function of time 't' –

A
It speed will 50 cm/sec after the force stop acting
B
Its direction of motion will reverse
C
It average acceleration will be 1 m/s 2 , during the interval force acts
D
Its average acc. will be 10m/s 2 , during the interval in which force act

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(a, b)

The impulse given to the particle is equal to the area under the F-t graph initial momentum of the particle. Hence, the particle will reverse in direction and move with its initial speed.

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