Solve the following examples / numerical problems:
A metal ball of mass 5 kg falls from a height of 490 m. How much time will it take to reach the ground ?

Solve the following examples / numerical problems: An iron ball of mass 3 kg is released from a height of 125 m and falls freely to the ground. Assuming that the value of g is 10 m/s^2, calculate (a) the time taken by the ball to reach the ground (b) the velocity of the ball on reaching the ground.

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.

Solve the following examples: (numerical problems) A body of mass 10 kg moves with a velocity of 5 m/s. Find its momentum.

Solve the following examples / numerical problems: 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 ?

Solve the following examples: (numerical problems) A shell of mass 10 kg is fired from a gun of mass 600 kg. The gun recoils with a velocity of 6 m/s . Find the muzzle velocity of the shell.

Solve the following examples / numerical problems: A stone on a bridge on a river falls into the river. If it takes 3 seconds to reach the surface of water, find (i) the velocity of the stone at the instant it touches the surface of water (ii) the height of the bridge from the surface of water.

Solve the following examples / numerical problems: How many calories of heat will be absorbed when 3 kg of ice at 0⁰ C melts ?

Solve the following examples / numerical problems: An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity ? How long will the object take to come back to the earth ? Assume g = 10m/s^2.

Solve the following examples / numerical problems: If the weight of a body on the surface of the moon is 100 N , what is its mass ?