The body mass was increased 2 times, and the body speed decreased 4 times. How did the impulse of the body change?
| July 27, 2021 | education
Initial data: change in body weight: m2 (final weight) = 2m1 (initial weight); change in body speed: V2 (final speed) = 1/4 V1 (initial speed).
1) Initial impulse of the body: P1 = m1 * V1.
2) The final impulse of the body: P2 = m2 * V2 = 2m1 * 1/4 V1 = m1 * V1 / 2.
3) Change in body impulse: P2 / P1 = (m1 * V1 / 2) / (m1 * V1) = 1/2.
Answer: The impulse of the body has decreased by 2 times.
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