Solve the SCRA Exam Question Paper of the previous year. Prepare better.
1. A simple of mass m is at x=0 and moving along the x axis with velocity V0, at time t=0. it is subjected to a frictional force -bvx where b is a constant. and vx is the velocity in the x-direction. At what position x on the x-axis will it come to rest ?
5. A body B of mass m moving forward with velocity v along the x-axis, collides elastically with a stationary object C of mass 2m at the origin. After the collision, body B moves backward along the x-axis. Given that the kinetic energy of the system is conserved. what is the speed of the object C after the collistion ?
6. A body is moved along a straight line by a machine delivering constant power. The distance moved by the body in time t is proportional to
(a) t 1/2
(b) t 3/4
(c) t 3/2
7. A body of mass 3 kg is under a force which causes displacement in it, given by s=t2/3 in meter, with time t in second. what is the work done by the force between time t=0 and t=2 ?
(a) 8 J
(b) 5.2 J
(c) 3.9 J
(d) 2.6 j
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