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CBSE Class 11-science Answered

A particle has an initial velocity of 3i+4j and an acceleration of 0.4i+0.3j. Its speed after 10 sec is
Asked by Anil | 18 Jun, 2017, 08:22: PM
answered-by-expert Expert Answer
begin mathsize 12px style Acceleration space is
straight a equals fraction numerator straight v minus straight u over denominator straight t end fraction
therefore straight v minus straight u equals at
therefore straight v equals at plus straight u
straight v equals open parentheses 0.4 straight i plus 0.3 straight j close parentheses cross times 10 plus open parentheses 3 straight i plus 4 straight j close parentheses
straight v equals 4 straight i plus 3 straight j plus 3 straight i plus 4 straight j
straight v equals 7 straight i plus 7 straight j end style
Answered by Romal Bhansali | 01 Nov, 2017, 01:31: PM
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