Question

A train moves from rest to a speed of 40 m/s in 20.0 seconds. What is its acceleration?

Answer 1

Answer: 25m/s

Explanation:

$S1=(2u+v)t \\ =20×20=400m \\ S2=40×20=800m \\ S3=(2u+v)t \\ =20×40=800m \\

Total \: displacement =2000 m

\\ Total \: time \: taken =80 m \\

V=802000=25m/s

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