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Prafull Pande shared a question:

A particle of mass 4 kg is being pulled across a smooth horizontal surface by a horizontal force. The force does 46 J of work in increasing the particle's velocity from 3 m/s to p m/s. Find the value of p.
(A) 4(2)^1/2 m/s
(B) 26 m /s
(C) 1.5 J
(D) 14.7 W

Apr 08, 2016 12:16 AM

Prafull Pande shared a question:

A block slides down an inclined plane of inclination

with constant velocity. It is then projected up the inclined plane with an initial speed u. How far up the inclination will it move before coming to rest?
(A) u²/4g sinθ
(B) u²/2g sinθ
(C) u²/g sinθ
(D) None of these

Apr 08, 2016 12:11 AM

Madhav Kande shared a question:

An asteroid of mass 'm' is approaching Earth, initially at a distance of 10R_e with speed 'v_i'. It hits the Earth with a speed of 'v_f' (R_e and Me are radius and mass of Earth, respectively). In this case,
(A)