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CBSE Class 9 Answered

A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 6m/s2  for 4 seconds. How far does the boat travel during this time?
Asked by Topperlearning User | 16 Jun, 2016, 05:33: PM
answered-by-expert Expert Answer

Initial velocity, u = 0; Acceleration, 6 m/s2 and time taken = 4 s

 Second equation of motion
begin mathsize 12px style straight s equals ut plus 1 half at squared Subsituting space the space given space values comma space we space get straight s equals 0 cross times 4 plus 1 half cross times 6 cross times open parentheses 4 close parentheses squared rightwards arrow straight s equals 48 space straight m end style
Answered by | 16 Jun, 2016, 07:33: PM

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