Answers

2016-07-03T08:48:24+08:00
Calculating Kinetic energy

K = mv^2 / 2

where
M = 400 kg
V = 60 m

k = (400 kg ) (60 m/s)^2 / 2
= 400 kg × 3600m^2/s^2 / 2
= 1,440,000 kg m^2/s^2 / 2
= 720,000 J
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