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Question

For a body moving with uniform acceleration a, initial and final velocities in a time interval t are u and v respectively. Then, its average velocity in the time interval t is :
  1. (v+at2)
  2. (vat2)
  3. (vat)
  4. (u+at2)

A
(v+at2)
B
(vat2)
C
(vat)
D
(u+at2)
Solution
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S=ut+12at2
v=u+at
Average velocity =Total displacement(s)Total time(t)=ut+12at2t=u+12at

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