Question

A river `500m` wide is flowing at a rate of `4 m//s.` A boat is sailing at a velocity of `10 m//s` with respect to the water, in a direction perpendicular to the river. The time taken by the boat to reach the opposite bank
A. 30 s
B. 40 s
C. 50 s
D. 60 s

Answer 1

Correct Answer - C

y : displacement = velocity x time
`500=10t rArr t = 50s`