Question

• Tick mark the correct alternative in the box with pen :
law of motion is called the law of inertia.
(A) first (B) second (C) third (D) none of the above
1. Newton's .......
Momentum = .................... (in the usual notation)
(A) 1/2 mu2 (B) mgh (C) mass x velocity (D) mass x speed
8. Force = .................... (in the usual notation)
(A) mu (B) m/a (C) weight x acceleration (D) mass x acceleration
4. Action and reaction ....
(A) are equal in magnitude and have the same direction
(B) cancel each other
(C) are equal in magnitude and opposite in direction
(D) are unequal in magnitude and have different directions
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Answer 1

Answer:

B second

C m×v

D Ma

C equal and opposite

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