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)

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 is placed at 10 cm from a convex lens of focal length 12 cm . Find the nature and position of the image .

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 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) A body moves in a straight line with a uniform acceleration. If the initial velocity of the body is 5 m/s and the velocity after 10 s is 15 m/s, find the acceleration of the body and

Solve the following examples: (numerical problems) A body moves in a Straight line with a uniform acceleration of 2 m/s^2 . If the initial velocity of the body is 10 m/s , find the velocity of the body after covering 75 m and the time taken by the body to attain this velocity.