Question

A train starts from rest. It moves through 1km in 20 minutes with uniform acceleration. what will be its speed at the end of 20 seconds. ​

Answer 1

Explanation:

S=ut+1/2at^2

u=0

1000m=1/2a×(100)^2

a=1000×2/100×100

=0.2m/s^2

from v=u+at

v=0.2 ×100=20m/s

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Answer 2

1 km=1000m

speed= distance/ time

speed =1000/20=50

Speed=50 m or 0.0005 km

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