How should the body weight be changed so that its kinetic energy increases 9 times?
| February 4, 2021 | education
Problem data: Ek2 (required kinetic energy) = 9Ek1 (initial kinetic energy); V (speed) = const.
The required change in body weight is determined from the ratio: k = Ek2 / Ek1 = (mk2 * V ^ 2/2) / (mn * V ^ 2/2) = mk / mn = 9 / 1. Therefore, mk = 9mn.
Answer: Body mass needs to be increased 9 times.
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