A block is pulled along a smooth horizontal surface

PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A block is pulled along a smooth horizontal surface. Use the data given to solve the following. (i) A constant horizontal force of

20\,\text{N}

is applied to a

4\,\text{kg}

block initially at rest. Calculate the acceleration produced. (ii) The force continues to act over a distance of

10\,\text{m}

. Find the speed of the block at the end of this distance. (iii) Determine the work done by the force during the

10\,\text{m}

displacement. (iv) Calculate the kinetic energy gained by the block and verify whether it equals the work calculated in part (iii).