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ICSE Class 10 Answered

1)A body starts from rest.what is the ratio of the distance traveled by the body during the 4th and 3rd second. 2)A person is standing in an elevator.In which case he finds his weight less than actual a)the lift moves up with constant acceleration  b)the lift moves down with constant  acceleration  c)the lift moves up with uniform velocity  d)the lift moves down with constant velocity  Plz urgent     
Asked by Sunita | 27 Feb, 2018, 10:11: PM
answered-by-expert Expert Answer
Distance travelled at 4th second  S4 = (1/2)a(4×4) m
Distance travelled at 4th second  S3 = (1/2)a(3×3) m
 
ratio S4/S3 = 16/9
 
(b) when the lift moves down with constant acceleration
Answered by Thiyagarajan K | 28 Feb, 2018, 07:27: AM

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