Physics-
General
Easy
Question
A particle of mass 
moving with a velocity 
makes an elastic one dimensional collision with a stationary particle of mass establishing a contact with it for extremely small time 
. Their force of contact increases from zero to 
linearly in time 
, remains constant for a further time 
and decreases linearly from to zero in further time as shown. The magnitude possessed by is
The correct answer is:
Change in momentum = Impulse
= Area under force-time graph
Area of trapezium
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