Solve the SCRA Exam Question Paper of the previous year. Prepare better.

**Physical Science**

**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 ?**

**(a)** x=bv_{0}

**(b)** x=bv_{0}/m

**(c) **x=mbv_{0}

**(d)** x=mv_{0}/b

**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 ?**

**(a)** 2v/3

**(b)** v/2

**(c) **v/3

**(d)** 3v/4

**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}

**(d)** t^{2}

**7. A body of mass 3 kg is under a force which causes displacement in it, given by s=t ^{2}/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

Click on the link below to download the complete paper.

**SCRA Exam Paper on Physical Science - 2009**