Question

# A train starting from a railway station and moving with uniform acceleration attains a speed $$40km\ h^{-1}$$ in $$10$$ minutes. Find its acceleration.

A
0.0185m/s2
B
0.0195m/s2
C
0.0165m/s2
D
0.0135m/s2

Solution

## The correct option is B $$0.0185 m/s^2$$Here we have, initial velocity,$$v=40$$km/h$$=11.11$$m/sTime $$t=10$$minutes$$=60\times 10=600$$secsWe know that $$v=u+at$$$$\Rightarrow 40\ km{hr}^{-1}=0+a\times 10$$m$$\Rightarrow 11.11 \ m{s}^{-1}=a\times 600$$secs$$\Rightarrow \dfrac{11.11}{600}=0.0185\ m{s}^{-2}$$Physics

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