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Class 9 physics Practice Tests

Class 9 Physics Online Tests

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The MCQ A body of mass 10 kg is moving with the velocity of 15 ms−1. force required to stop it in 3 seconds should be: 50 ns, 100 ns, 75 ns and 170 ns with "Physics Study Guide" App Download (Free) for online school courses. Study dynamics quiz questions, download Amazon eBook (Free Sample) for online certificate courses.

## Physics Study Guide MCQ Quiz : Physics MCQs

MCQ 1: A body of mass 10 kg is moving with the velocity of 15 ms−1. The force required to stop it in 3 seconds should be

A) 50 Ns
B) 100 Ns
C) 75 Ns
D) 170 Ns

MCQ 2: A bullet of mass 30 g is fired from a gun with a muzzle velocity 90ms−1. If its mass is 4 kg then the recoil of the gun will be

A) − 0.34 ms−1
B) 0.54 ms−1
C) − 0.54 ms−1
D) 0.34 ms−1

MCQ 3: SI unit of momentum is

A) newton second (Ns)
B) θ
C) μ
D) λ

MCQ 4: A group of interacting bodies on which no external force is acting is known as

A) sexasigmal system
B) isolated system
C) SGS system
D) none of above

MCQ 5: The momentum of an isolated system of two or more than two interacting bodies remains

A) variable
B) zero
C) negative
D) constant

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