JEE Main Physics question
When the speed of a moving body is doubled, [UP SEE 2004]
Answer: (B)
Solution
Momentum p = mv is directly proportional to v, so doubling v doubles p. (Kinetic energy, ∝v², would quadruple, not double.)
When the speed of a moving body is doubled, [UP SEE 2004]
Momentum p = mv is directly proportional to v, so doubling v doubles p. (Kinetic energy, ∝v², would quadruple, not double.)