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CBSE Class 9 Answered

a force applied on a bodu of 1.2kg for0.2 s and the body travelled a distance of 2m in the round. Find the force applied on the body. 
Asked by garimasinha991 | 23 Jul, 2019, 05:10: PM
answered-by-expert Expert Answer
We have the equation for distance travelled,  S = ut+(1/2)at2 ..................(1)
 
where u is initial speed which is zero for this question because initially the body is at rest, a is acceleration and t is time.
 
hence   2 = (1/2)a×0.2×0.2   or   acceleration  a = 100 m/s2
 
force = mass×acceleration = 1.2×100 = 120 N
Answered by Thiyagarajan K | 23 Jul, 2019, 11:06: PM
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