A ball of 1 kg is thrown with a velocity of 9.9 m per second the work done by its weight in 1 second is

A body of mass 1 kg is lifted through a height of 1m, then its work done is

A ball of mass 1 kg is thrown up. It reaches a maximum height of 5m. What is the work done by the force of gravity during motion [g = 9.8 m//s^(2)]

A ball of mass 1 kg is thrown up with an initial speed of 4 m//s . A second ball of mass 2 kg is released from rest from some height as shown in Fig. Choose the correct statement (s).

The de-Broglie wavelngth of a tennis ball mass 60 g moving with a velocity fo 10 m per second is approximately :

A ball is thrown vertically upwards with a velocity of 10 ms^(-1) . It returns to the ground with a velocity of 9 ms^(-1) . If g=9.8 ms^(-2) , then the maximum height attained by the ball is nearly (assume air resistance to be uniform)

A ball of mass 1 kg moving with a velocity of "0.4 ms"^(-1) collides with another stationary ball. After the collision, the first ball moves with a velocity of 0.3ms^(1) in a direction making an angle of 90^(@) with its initial direction. The momentum of the second ball after the collision will be (in kg ms^(-1) )

A ball is thrown upwards with a velcoity of 80 m//s at an angle of 30^@ to the horizontal . Find its velcituy after one second.

A ball of mass 1kg thrown upwards, reaches a maximum height of 4m. Calculatel the work done by the force of gravity during the verticle displacement. (g = 10m//s^2).