Kinematics Question 373

Question: The velocity of an object moving rectilinearly it’s given as a function of time by $ v=4t-3t^{2}, $ where v it’s in m/s and t it’s in seconds. The average velocity of particle between t = 0 to t = 2 seconds is

Options:

A) $ 0 $

B) $ -2m/s $

C) $ -4m/s $

D) $ \text{8 }m/s $

Show Answer

Answer:

Correct Answer: A

Solution:

$ v=4t-3t^{2} $

$ V _{avg}=\frac{0-0}{2}=0 $

$ V _{avg}=\frac{{s _{( 2 )}}-{s _{( 0 )}}}{2-0}[ s _{2}=8-8=0 ] $

$ V _{avg}=\frac{0-0}{2}=0 $



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