What is the mass of a body, the kinetic energy of which is 25 kJ, and the speed of the body is 5 m / s?
| December 11, 2020 | education
Ek = mv ^ 2/2, where v is the speed
Given:
Ek = 25000J
v = 5 m / s
Find: m =?
Decision:
Ek = m * 5 ^ 2/2 = 25000
m * 25/2 = 25000
m / 2 = 1000
m = 2000 (kg)
Answer: m = 2000kg.
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