A body is projected downward at an angle `60^@` with the horizontal with a velocity `9.8 ms^-1` form building 20m high. How long will it take before striking the ground.

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

A ball is thrown up with a velocity 4.9ms^-1 . Find the maximum height reached by the ball. How long does it spend in air?

A particle is projected form ground with an initial velocity 20ms^-1 at an angle 30^@ with the horizontal. What is the magnitude of change of velocity in 5sec.

A bomber piane is moving horizontally with a speed of 500ms^-1 and a bomb relased from it strikes the ground in 10s. The angle it strikes the ground is

An object is projected upward with a velocity of 100ms^-1 . It will strike the ground in approximately

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 train 100 m long is moving with a velocity of 60 km/hr. Find the time it takes to cross the bridge 1km long.

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.

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?