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A train starting from rest attains …

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A train starting from rest attains a velocity of 72km/h in 5 min. Assuming that the acceleratiin is uniform, find the (i) the acc (ii) the distance travelled by the train for attaining this velocity

Posted by Aparna Singh 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 4 months ago

Initial Velocity=u=0m/s
Final velocity= V= 72km/h
Time =5 min =5/60 h =1/12 h
acceleration=a=?
As we know that , a=v-u/t
⇒a=72-0/1/12
=72*12
=864km/h²
Distance travelled =s=ut+1/2at²
=0x1/12 +1/2(864)(1/12)²
=(1/2)x864x(1/144)
=3km
∴Distance travelled by the train for attaining this velocity 3km.

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CBSE > Class 09 > Science