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Kamila [148]
1 year ago
14

Help please!

Physics
1 answer:
weeeeeb [17]1 year ago
5 0

Answer:

m=1000kg

v=72km/h=20m/s

Work = different of kinetic energy

W= ½ mv ²

W= ½ ×1000×20×20= 400000J

also written as 4×10^5 J

thank you

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