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A body is thrown up with a velocity 100 M per second it travels 5 M in the last second of its journey if the same body is thrown up with a velocity 12200 M per second how much distance will it rain in last second

A body is thrown up with a velocity 100 M per second it travels 5 M in the last second of its journey if the same body is thrown up with a velocity 12200 M per second how much distance will it rain in last second

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Grade:12th pass

1 Answers

Arun
25750 Points
6 years ago
Dear Anuj
 
as we know distance travelled in last second s = u + (1/2)*f*(2t-1)
5 = 100 -5(2t-1)
2t-1 = 19
t = 10 sec
 
Now for 200 m/sec
V = u + ft 
0 = 200 - 10t
t = 20 sec
Hence 
Distance travelled in last second i.e. 20th sec
S = 200 -5(39)
S = 200 - 195
S = 5 metres
 
 
Regards
Arun (askIITians forum expert)

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