A ball of mass moving along a smooth horizontal track with speed collides head-on…
PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
A ball of mass 2kg moving along a smooth horizontal track with speed 10ms−1 collides head-on with a stationary block of mass 3kg. Immediately after impact, the ball and the block stick together and move as a single body.
(i) Calculate their common velocity just after the collision.
(ii) Find the total kinetic energy of the system before the collision.
(iii) Determine the total kinetic energy of the system after the collision.
(iv) Compute the fractional loss of kinetic energy KinitialΔK.
(v) Express the loss as a percentage of the initial kinetic energy and state into which form(s) this missing energy is likely to have been converted.