What kinetic energy does a spacecraft weighing 8.2 tons have when orbiting the Earth at a speed of 3.07 km / s?
| November 23, 2020 | education
Given:
m = 8.2t = 8200kg
v = 3.07 km / s
To find:
Ek =?
Decision:
Ek = m * v ^ 2/2
Ek≈8200kg * 2.07km / s ^ 2 / 2≈8200 * 4.2849: 2≈17568J
Answer: 17568J
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