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schepotkina [342]
3 years ago
12

A train has a mass of 1.50 x 107 kg. If the engine can

Physics
1 answer:
Vikki [24]3 years ago
8 0

vi=0, vf=80km/hr=22m/s, m=1.5x107kg, F = 7.5x105N.

a=F/m, t=(vf-vi)/a= (vf-vi)m/F = (22m/s)(1.5x107kg)/7.5x105N = 440 kg m/sN =  440 s or 7mins

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