The kinetic energy is 2.4 kJ, the mass is 700 g. Find speed.
| November 23, 2020 | education
Kinetic Energy Formula:
E = mv ^ 2/2
Let us express the speed from the formula:
v ^ 2 = 2E / m
v ^ 2 = 2 * 2.4 kJ / 700 g = 2 * 2.4 * 10 ^ 3 / 0.7 kg = 6.8571 * 10 ^ 3 m ^ 2 / s ^ 2
v = 82.1 m / s
Answer: v = 82.1 m / s.
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