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A train starting from a railway station and moving with uniform acceleration attains a speed of 40 kmh 1 in 10 minutes. Find its acceleration in the units of ms 2.
Question

A train starting from a railway station and moving with uniform acceleration attains a speed of 40kmh-1 in 10minutes. Find its acceleration in the units of ms-2.


Solution

Step 1: Given

Initial speed, u=0ms-2

Final velocity, v=40kmh-1=40×518=1009ms-1

Time, t=10minutes=600seconds

Step 2: Formula used and calculation

Using the first equation of motion

v=u+at1009ms-1=0+600s×aa=1009×600ms-2a=0.0185ms-2

Hence, the acceleration of the train is 0.0185ms-2.


Physics
Standard VII

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