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Q.

If the unit of velocity is 4 m s-1, the unit of acceleration is 24 m S-2, and the unit of force is 6 N, then choose the correct statement(s).

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a

Unit of energy is 4 J.

b

Unit of momentum is 1 Ns.

c

Unit of power is 24 W.

d

Unit of momentum is 2/3 Ns.

answer is A.

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Detailed Solution

Unit of mass = Force  Acceleration =624=14 Unit of time = Velocity  Acceleration =424=16 Unit of energy =( Mass )( Velocity )2=14(4)2=4J Unit of momentum = Force × Time =6×16=1Ns Unit of power = Energy  Time =41/6=24W
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