Two bodies of mass m and 4m are moving with the same kinetic energy. The ratio of momentum will be:
Correct answer: D. 1:2
- A. 4:1
- B. 1:1
- C. 1:4
- D. 1:2
Explanation
Relation between Linear Momentum and Kinetic Energy is P= 2mK.E As mentioned in question K.E is same Therefore for m and 4m masses we have P1 : P2 2 m K.E : 2 (4m) K.E 2 m K.E : 2 (4m) K.E m : 4m 1 : 2
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About Linear Momentum
Linear momentum is the vector product of mass and velocity, p = mv, and changes when a net external force acts. Work includes impulse as the change in momentum, conservation of momentum in isolated systems, collisions and explosions, and the distinction between elastic, inelastic and perfectly inelastic collisions.
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