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A truck running at 90km/hr it …

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A truck running at 90km/hr it brought a rest over a distance of 25m. Calculate retardation and time for which brakes applied

Posted by Seema Dasaur 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 3 months ago

Speed = 90km/h = 25m/s
Distance = 25m
0-625 = 50a
a = -12.5m/s²
0 = 25 - 12.5t
t = 250/125 = 4sec

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