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Question
A bus increases its speed from 36 km/h to 72 km/h in 10 seconds. Its acceleration is :
Options
5 m/s2
2 m/s2
3.6 m/s2
1 m/s2
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Solution
1 m/s2
Final velocity is = 72 km/h = 20 m/s
Initial velocity is = 36 km/h = 10 m/s
Time taken is 10 sec. so,
Acceleration = `(20-10)/10`
= 1 m/s2
So, the answer is
(d) 1 m/s2
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