Question

A ball of mass 0.5 kg is at A at a height of 10m above the
ground. Solve the following questions by applying work-energy
principle. In free fall
a) What is the speed of the ball at B?
b) What is the speed of the ball at the point C?
c) How much work is done by gravitational force in
bringing the ball from A to C (give proper sign)?

Answer 1

$\huge{\underline{\sf{<u>a= 12km/h}}}$

$\huge{\underline{\sf{13km/s}}}$

$\huge{\sf{7%}}$