Problem statement A force causes an acceleration of 10 m/s^2 in a body of mass 500 g. What acceleration would be caused by the same force in a body of mass 5 kg. Solution Case 1 mass = m=500 g = 0.5 kg Acceleration = a =10 m/s^2 Force = ma = 0.5 . 10 […]

## Solution of Physics Numericals for class 9 (set 1 Q14)

Problem Statement A body of mass 500 g, initially at rest, is acted upon by a force which causes it to move a distance of 4 m in 2 sec. Calculate the force applied. mass=m = 500 g = 0.5 kg Initial velocity = u = 0 Distance travelled = s=4 m Time duration =t= […]

## Solution of Physics Numericals for class 9 (set 1 Q13)

Problem Statement A cricket ball of mass 100 g moving at a speed of 30 m/s is brought to rest by a player in 0.03 s. find the average force applied by the player. Solution: mass =m= 100 g = 100/1000 kg = 0.1 kg initial velocity = u=30 m/s Final velocity = v=0 Time […]

## Solution of Physics Numericals for class 9 (set 1 Q12)

Problem Statement A force acts for 0.1 sec on a body of mass 2 kg initially at rest. The force is then withdrawn and the body moves with a velocity of 2 m/s. Find the magnitude of the force. Solution of class 9 Set1 Q12 Solution: A force acts on a body for 0.1 sec. […]