Assume that g is 10 N/kg and that air resistance and other frictional forces are negligible.
1 )An object has a mass of 6 kg What is its gravitational potential energy
a( 4 m above the ground
b) 6 m above the ground?

2) An object of mass 6 kg has a speed of 5 m/s.
a What is its kinetic energy?
b What is its kinetic energy if its speed is doubled?

3 A ball of mass 0.5 kg has 100 J of kinetic energy. What
is the speed of the ball?

help with this its very important plss​