EASY
9th CBSE
IMPORTANT
Earn 100

A force of 10 N acts upon a body of mass 2 kg. Calculate the acceleration.

Important Questions on Force and Laws of Motion

MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 2 - Force and Laws of Motion>Exercise>Q 3
For how long should a force of 100 N act on a body of 20 kg so that it acquires a velocity of 100 m s-1?
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 2 - Force and Laws of Motion>Exercise>Q 4
A body of mass 3 kg uniformly retards from 40 m s-1 to 10 m s-1 in  10 s. Find the retarding force.
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 2 - Force and Laws of Motion>Exercise>Q 5
A car weighing 2400 kg and moving with a velocity of 20 m s-1 is stopped in 10 seconds on applying brakes. Calculate the retardation and retarding force.
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 2 - Force and Laws of Motion>Exercise>Q 6

A car of mass 1000 kg moving with a speed of 20 m s-1 is brought to rest in a distance of 50 metres. Calculate:

(i) the acceleration
(ii) the unbalanced force acting on the vehicle.

MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 2 - Force and Laws of Motion>Exercise>Q 7
Find (i) acceleration, (ii) the distance travelled in 6 s, when a net force of 75000 N accelerates a car of mass 1500 kg uniformly from rest.
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 2 - Force and Laws of Motion>Exercise>Q 8
Which would require a greater force accelerating a 2 kg mass at 5 m s-2 or a 4 kg mass at 2 m s-2?
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 2 - Force and Laws of Motion>Exercise>Q 9
A force of 5 N gives a mass m1, an acceleration of 10 m s-2and a mass m2, an acceleration of 20 m s-2. What acceleration would it give if both the masses were tied together?
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 2 - Force and Laws of Motion>Exercise>Q 10
A 150 g ball travelling at 30 m s-1 strikes the palm of a player’s hand and is stopped in 0.06 s. Calculate the force exerted by the ball on the hand.