Rain is falling vertically with a speed of $$35~\text{ms}^{-1}$$${}^{}$. Winds starts blowing after sometime with a speed of $$12~\text{ms}^{-1}$$${}^{}$ in east to west direction. At what angle should a boy waiting at a bus stop hold his umbrella?

 1 $$16^{\circ}$$ with the vertical 2 $$15^{\circ}$$ with the vertical 3 $$19^{\circ}$$ with the vertical 4 $$19^{\circ}$$ with the horizontal
Subtopic:  Relative Motion |
60%
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A motorboat is racing towards the north at 25 km/h and the water current in that region is 10 km/h in the direction of 60° east of the south. The resultant velocity of the boat is:

1. 12 km/h at $23.{4}^{ο}$ east of west

2. 22 km/h at $23.{4}^{ο}$ north of east

3. 22 km/h at $23.{4}^{ο}$ east of north

4. 20 km/h at $23.{4}^{ο}$ north of wast

Subtopic:  Relative Motion |
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Rain is falling vertically with a speed of $$35$$ m/s. A woman rides a bicycle with a speed of $$12$$ m/s in the east-to-west direction. What is the direction in which she should hold her umbrella?

 1 in the vertical direction only. 2 $$19^\circ$$ with vertical towards east. 3 $$19^\circ$$ with vertical towards the west. 4 $$19^\circ$$ with vertical towards the south.
Subtopic:  Relative Motion |
56%
From NCERT
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