10)At a certain instant the velocity of a vehicle moving in a straight line is
40km/h after 2s the velocity is 46km/h and 2s later it is 552 km/h. What is the
acceleration of the vehicle m/s^2
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Answer:Acceleration = Change in velocity/time taken
In the first two seconds,
Acceleration = [(33.6 - 30)/2] km/h2
= 1.8 km/h2
= 0.5 m/s2 …(i)
In the next two seconds,
Acceleration = [(37.2 - 33.6)/2] km/h2
= 1.8 km/h2
= 0.5 m/s2…(ii)
From (i) and (ii), we can say that the acceleration is uniform.
Explanation:
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