16. A swimmer capable of swimming with velocit
4 m/s relative to water, jumps in river flowing with
velocity 2 m/s. The swimmer swims downstream
covering a distance 12 m and returns to the original
position by swimming upstream. The time taken in
complete journey is
(1) 3 s
(2) 4 s
(3) 2s
(4) 85
Answers
Answered by
0
Answer:
b.4s
Explanation:
Answered by
0
Answer:
Explanation:
According to question , we use 3rd equation of motion , V^2 - U^2 = 2as ; given , U = 4m/s , V = 2m/s , x = 12 m , T = ? Now, put the value in 3rd equation of motion are , to get , a = - 0.5 m/s^2 . Now we use 1st equation of motion are , V - U = at ; then we put the value to get , T = 4 sec .
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