A man drops a 20 kg object from the top of a 10m high building . What will be the velocity of the object when it just hits the ground?

Solve the following examples / numerical problems: A body is released from the top of a building of height 19.6 m . Find the velocity with which the body hits the ground.

A body is released from the top of a tower of height 50 m. Find the velocity with which the body hits the ground. (g=9.8 m/s^2)

A boy drops a coin form the top of a building with is 49m high. Find the velocity with which the coin strikes. Calculate total time (t) it takes to return to the surface of earth .

500 kg water isstored in the overhead tank of a 10 m high building.Calculate the amount of potential energy stored in the water.

Rajashree wants to get an inverted image of height 5 cm of an object kept at a distance of 30 cm from a concave mirror. The focal length of the mirror is 10 cm. At what distance from the mirror should she place the screen ? What will be the type of the image, and what is the height of the object?

A stone is released from the top of a tower 90m high. At the same instant a second stone is projected vertically upwards from the ground with a velocity of 30 m//s . When and where will the two stones meet?

Solve the following examples / numerical problems: A stone is dropped from rest from the top of a building 44.1 m high. It takes 3 s to reach the ground . Use this information to calculate g.

Two buildings are in front of each other on either side of a road of width 10 metres. From the top of the first building which is 30 metres high, the angle of elevation to the top of the second is 45^(@) . What is the height of the second building?

An object takes 15 s to reach the ground from a height of 40 m on a planet. What is the value of g on the planet ?

An object takes 5 s to reach the ground from a height of 5 m on a planet. What is the value of g on the planet ?