Question

A wooden block, initially at rest on the ground, is pushed by a force which increases linearly with time t. Which of the following curve best describes acceleration of the block with time :

(1)

 

(2) 

(3)

(4)

Answer 1

Correct option is :  (2)

\(\mathrm{F}=\mathrm{ma} \Rightarrow \mathrm{a}=\frac{\mathrm{F}}{\mathrm{m}}=\frac{\mathrm{kt}}{\mathrm{m}}\)

a vs \(t\) will be straight line passing through origin.