CBSE Class 11-science Answered
Velocity vs time graph of a particle moving along a straight line is shown. 
What is the average acceleration between t = 4 s and t = 12 s?
What is the average acceleration between t = 4 s and t = 12 s?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Acceleration is the rate of change of velocity.
At t = 4 s and 12 s, v = 10 m/s and -10 m/s respectively.
Final velocity = -10 m/s, and the initial velocity = 10 m/s.
Thus acceleration = (vf-v0)/t = (-10 - 10)/ (12-4) = -2.5 m/s2
Final velocity = -10 m/s, and the initial velocity = 10 m/s.
Thus acceleration = (vf-v0)/t = (-10 - 10)/ (12-4) = -2.5 m/s2
Answered by | 04 Jun, 2014, 03:23: PM
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