Question

To change the state of rest or of motion we require *


A. Only balanced force

B. Only Unbalanced force

C. Both of the above forces

D. Centripetal force.

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Answer 1

B. An unbalanced force

If a body is in a state of rest or of uniform motion, an unbalanced force (such that net force is non-zero) should act on it to change the state.

If the force is balanced then there will be no change in the state as the effect of the force is balanced.