A balloon ascending at the rate of `9.8 ms^(-1)` is at a height of 39.2 m above the ground when a packet is dropped from the baloon. After how much time and with what velocity does it reach the ground? `g= 9.8 ms^(-2)`.

A balloon is rising with a speed of 5ms^-1 . When it is at a height of 98m a packet is dropped from it. What is the velocity of the packet when it strikes the ground?

A body is allowed to fall from a height of 20 metres from the ground. How much time will take to reach the ground? What will be its velocity just a moment before hitting the ground?

With what velocity a body has to be thrown up so that it can rise up to a height of 10 metres from the ground? How much time will fake to reach the highest point?

A 1.2m tall girl spots a balloon moving with the wind in a horizontal line at a height of 88.2 m from the ground.The angle of elevation of the balloon from the eyes of the girl at any instant is 60^@ .After some time,the angle of elevation reduces to 30^@ (see Fig 9.13),Find the distance travelled by the balloon during the interval..

A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 ms^-2 , with what velocity will it strike the ground? After what time will it strike the ground?

A stone is dropped from a rising balloon at a height of 75 m above the ground. It reaches the ground in 6 seconds. Calculate the velocity of the balloon just at the moment when the stone is dropped.

A stone is dropped from the top of a tower 100m high. At the same time another stone is thrown vertically upwards from the ground with a velocity of 50 ms^-1 . Find when and where the stones will meet.

A particle is projected at an angle of 45^@ with a velocity 9.8ms^-1 . What is horizontal range.

From the top of a tower 100m in height, a ball is dropped and at the same time another ball is projected vertically upwards from the ground with a velocity of 25ms^-1 . Find when and where two balls will meet.