A stone of mass 100 g is thrown upward with velocity `49 ms^(-1).` This stone will fall on the earth after………….s

A body of mass 1 kg is thrown upwards with a velocity 20 ms^(-1) .It momentarily come to rest after attaining a height of 18 m . How much energy is lost due to air friction (g = 10 m//s^(-2))

An object of mass 2kg is thrown in the upward direction with velocity of 3ms^(-1) . What would be the maximum potential energy of this object?

A stone is throuwn in a vertically upward direction with a velocity of 5 ms ^(-1). If the acceleration of the stone during its motion is 10 ms ^(-2) in the downword direction, what will be the height attained by the stone and how much time will it take to reach there ?

An object is thrown vertically upwards with velocity of 20ms^(-1) . At what height will its kinetic energy and potential energy be equal? (g=10ms^(-2))