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Question
A train starting from a railway station and moving with uniform acceleration attains a speed 40 km h−1 in 10 minutes. Find its acceleration.
Solution
Here, initial speed, u = 0
Final speed, v = 40 km h-1
= `(40 xx 1000)/(60 xx 60)`
= 11.11 ms-1
Time taken, t = 10 × 60s
= 600s
Acceleration,
a = `(v - u)/t`
= `(11.11-0)/600`
= 1.85 × 10-2 ms-2
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