Class 9 Force and Laws of Motion MCQ Quiz Set 1

MCQ Quiz – 1 MCQ Quiz – 2 Notes Important Questions NCERT Solutions

Force and Laws of Motion Quiz – 1

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1. A particle of mass ‘m’ moving with velocity ‘v’ strikes a stationary particle of mass ‘2m’ and sticks to it. The speed of the system will be

 
 
 
 

2. A force of 5 newton acts on a body of weight 9.80 newton. What is the acceleration produced in m/s2?

 
 
 
 

3. A rocket works on the

 
 
 
 

4. A hammer weighing 3 kg, moving with a velocity of 10 m/s , strikes against the head of a spike and drives it into a block of wood. If the hammer comes to rest in 0.025 s, the impulse associated with a ball will be

 
 
 
 

5. When a net force acts on an object, the object will be accelerated in the direction of the force with an acceleration directly proportional to the

 
 
 
 

6. Newton used the phrase ‘quantity of motion’ for

 
 
 
 

7. The law which gives a quantitative  measurement of force is

 
 
 
 

8. Momentum has the same units as that of

 
 
 
 

9. A lift is moving up with an acceleration of 3.675 m/s2. The weight of a man

 
 
 
 

10. A bullet of mass 0.01 kg is fired from a gun weighing   5.o kg. if the initial speed of the bullet is 250 m/s,  calculate the speed with which the gun recoils.

 
 
 
 

11. 1 dyne is equal to

 
 
 
 

12. A 4000 kg lift is accelerating upwards . the tension in the supporting cable is 64000 N. if g = 10 m/s2, then the acceleration of the lift is

 
 
 
 

13. When a body is stationary

 
 
 
 

14. The product of force and time is called

 
 
 
 

15. A force of 6 N acts on a mass of 1 kg which acquires a velocity 30 m/s. The time for which the force acts is

 
 
 
 

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