. Choose the wrong statement


A: 1 kg wt = 9.8 N

B: Momentum is a vector quantity.

C: Force is always conserved.

D: Momentum is conserved in the absence of an external force.

Best Answer

Explanation:

  •  In Any 1 kg object the gravitational force act is equal to (1kg9.8m/s2)=9.8N .
  • The momentum is a product of mass and acceleration and as it has a direction also so it is a vector quantity.
  • Force is not conservative in all way example friction because this force is not depend upon the path.
  • Momentum is always conserved when any external force is not acted.

Final answer:

The option ( c) is correct.

 

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