A 500kg car which was initially at rest travelled with an acceleration of 5m/s², its kinetic energy after 4 seconds was
Jamb 1979 A 500kg car which was initially at rest travelled with an acceleration of 5m/s², its kinetic energy after 4 seconds was A. 10⁵J B. 2.5 x 10³J, C. 2 x 10³J D. 5 x 10³J E. 5 x 10⁵J ANSWER: Option A EXPLANATION: KE = ½mv² Since v […]