A ball of mass 50 g is thrown upwards. It rises to a maximum height of 100m. At what height its KE is reduced to 70% ?

A ball is thrown up and attains a maximum height of 100 m .Its initial speed was

A body is thrown upward and reaches its maximum height. At that position-

A body of mass m thrown vertically upwards attains a maximum height h. At what height will its kinetic energy be 75% of its initial value?

A ball of mass 0.3 kg thrown upwards reaches a maximum height of 5 m. Calculate the work done by the force of gravity during this vertical displacement considering the value of g = 10 m//s^(2) .