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Learn physics MCQs: a body of mass 10 kg is moving with velocity of 15 ms−1. force required to stop it in 3 seconds should be, with choices 50 ns, 100 ns, 75 ns, and 170 ns for online secondary education degree. Free physics student portal for online learning physics study guide quiz questions, MCQs to find questions answers based online learning tests.

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

1. 50 Ns
2. 100 Ns
3. 75 Ns
4. 170 Ns

C

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

1. − 0.34 ms−1
2. 0.54 ms−1
3. − 0.54 ms−1
4. 0.34 ms−1

C

MCQ: SI unit of momentum is

1. newton second (Ns)
2. θ
3. μ
4. λ

A

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

1. sexasigmal system
2. iscolated system
3. SGS system
4. none of above

B

MCQ: Momentum of an iscolated system of two or more than two interacting bodies remains

1. variable
2. zero
3. negative
4. constant

D