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Question

A truck moves at 36 kmh1. It increases its velocity to 90 kmh1 in 0.1 minute.

What is the acceleration of the truck?


A
4.5 ms2
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B
5.5 ms2
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C
2.0 ms2
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D
2.5 ms2
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Solution

The correct option is D 2.5 ms2
Given,

Initial velocity of the truck, u=36 kmh1=36×518=10 ms1

Final velocity of the truck, v=90 kmh1=90×518=25 ms1

Total time taken, t=0.1minute=6s

We know,
Equation of motion as :
v=u+at,
a=vat,
Acceleration=156=2.5ms2

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