Physics

Problem

An automobile of mass

900\,\text{kg}

is moving along a straight road. a. (a) Calculate its kinetic energy when its speed is

15\,\text{m/s}

. b. (b) If the same automobile possesses

0.50\,\text{MJ}

of kinetic energy on another occasion, determine its speed at that time. c. (c) Convert the energy obtained in part (a) to kilojoules.