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CBSE Class 9 Answered

A motorcycle starts from rest and uniformly accelerates at 1m/s.Find the distance travelled in the 3rd second.
Asked by poojaramesh742 | 17 Jun, 2018, 01:15: PM
answered-by-expert Expert Answer
initial velocity at 3rd second = velocity attained after travelling 2 seconds = a×t = 1×2 = 2 m/s
 
(  the equation used in above statement is , " v = u+at ", u = initial velocity = 0, v is final velocity)
 
To get distance travelled at 3rd second, we need to use the equation, "S = ut+(1/2)at2 ", with u = 2m/s and  t =1 becuase it is one second travel
 
Distance S travelled at 3rd second is,   S = 2+(1/2)×1 = 2.5 m
Answered by Thiyagarajan K | 17 Jun, 2018, 03:57: PM
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