Work, Energy and Power (NEET Physics): Questions 21 - 23 of 61
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Question number: 21
» Work, Energy and Power » Elastic and Inelastic Collisions
A particle of mass m strikes a wedge of mass M horizontally as shown in the figure. If collision is perfectly inelastic then, it can be concluded that the particle sticks to the wedge.
In perfectly inelastic collision velocity of both bodies is same along common normal just after collision.
|a.||Ꭺ is false but Ꭱ is true|
|b.||Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ|
|c.||Ꭺ is true but Ꭱ is false|
|d.||Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ|
Question number: 22
» Work, Energy and Power » Kinetic Energy
A body of mass M splits into two parts αM and (1 - a) M by an internal explosion, which generates kinetic energy T After explosion if the two parts move in the same direction as before, their relative speed will be –
Question number: 23
» Work, Energy and Power » Work Done
A particle moving in a straight line is acted by a force, which works at a constant rate and changes its velocity from u to v in passing over a distance x. The time taken will be –