Kinematics Question 658

Question: Rain, pouring down at an angleα with the vertical has a speed of 10 ms1. A girl runs against the rain with a speed of 8 ms1 and sees that the rain makes an angle β with the vertical, then relation between α and β it’s

Options:

A) tanα=8+10sinβ10cosβ

B) tanβ=8+10sinα10cosα

C) tanα=tanβ

D) tanα=cotβ

Show Answer

Answer:

Correct Answer: B

Solution:

[b] tanβ=vgirl+vrainsinαvraincosα

tanβ=8+10sinα10cosα



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