Two identical ball bearings in contact with each other and resting on a frictionless table are hit head-on by another ball bearing of the same mass moving initially with a speed V as shown in Fig. 6.3.

If the collision is elastic, which of the following (Fig. 6.4) is a possible result after collision?

Two inclined frictionless tracks, one gradual and the other steep meet at A form where two stones are allowed to slide down from rest, one on each track as shown in Fig. 6.1. Which of the following statement is correct?

The potential energy function for a particle executing linear SHM is given by V (x) = kx²where k is the force constant of the oscillator (Fig. 6.2). For k = 0.5N/m, the graph of V(x) versus x is shown in the figure. A particle of total energy E turns back when it reaches x = ±x_m. If V and K indicate the P.E. and K.E., respectively of the particle at x = +x_m, then which of the following is correct?

A body of mass 0.5 kg travels in a straight line with velocity v = a x^3/2 where a = 5 m^-1/2 s^-1. The work done by the net force during its displacement from x = 0 to x = 2 m is

A body is moving unidirectionally under the influence of a source of constant power supplying energy. Which of the diagrams shown in Fig. 6.5 correctly shows the displacement-time curve for its motion?