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Question

A heavy truck moves at 36km/h. It increases its velocity to 90km/h in 0.1minute.

What is the acceleration of the truck?


  1. 6.0m/s2

  2. 5.5m/s2

  3. 3.0m/s2

  4. 2.5m/s2


Solution

The correct option is D

2.5m/s2


Initial velocity of the truck =36km/h=10m/s
Final velocity of the truck =90km/h=25m/s
Change in velocity of the truck=2510=15m/s
Total time taken=0.1minute=6s
Acceleration=156=2.5m/s2

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