State the two factors on which kinetic energy depends.

A body is thrown vertically upward. What happens to its KE (a) during the motion, (b) at the highest point?

A man buys an electric motor of $10$ horsepower rating

(i) What is the power of the motor in Watts?

(ii) How much work can the motor do in one second?

Find the expression for the gravitational potential energy of a body of mass $m$ at a height $h$.

A car of mass $1500 \mathrm{kg}$ is at rest. What is the force (in newtons) required to accelerate the car from rest to a speed of $20 \mathrm{m}/\mathrm{s}$? Distance covered by the car is $40 \mathrm{m}$.

(Only write the magnitude of the answer in the given box, no need to write the unit.)