Physics
A ball of mass 0.5 kg slows down from a speed of 10ms-1 to that of 6ms-1. Calculate the change in kinetic energy of the ball.
Related Questions
Two bodies have masses in the ratio 5 : 1 and kinetic energies in the ration 125 : 9. Calculate the ratio of their velocities.
A car is running at a speed of 15 km h-1 while another similar car is moving at a speed of 45 km h-1. Find the ratio of their kinetic energies.
A canon ball of mass 500g is fired with a speed of 15m/s-1.
Find:
(i) its kinetic energy and
(ii) its momentum.
A body of mass 10 kg is moving with a velocity 20 m s-1.
If the mass of the body is doubled and its velocity is halved,
find:
(i) the initial kinetic energy, and
(ii) the final kinetic energy.