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Physics
Haleigh Hubbard
15 October, 10:14
M=2450kg
V=72km/h
Ek=?
+3
Answers (
1
)
Andrea Cain
15 October, 14:05
0
490,000J
Explanation:
Mass (M) = 2450kg
Velocity (V) = 72km/h
Converting from km/h to m/s:
(72km) * (1000m) * (1h) / (3600s) * (1km) (1h)
Km and h cancel out:
V = 20m/s
Kinetic energy (Ek) = ?
Ek=1/2MV^2
Ek=1/2 * (2450kg) * (20m/s) ^2
Ek=490,000J
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