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A car with a vertical windshield moves in a rain storm at a speed of 40km/hr. The rain drops fall vertically with constant speed of 20m/s. The angle at which rain drops strike the windshield is?

A car with a vertical windshield moves in a rain storm at a speed of 40km/hr. The rain drops fall vertically with constant speed of 20m/s. The angle at which rain drops strike the windshield is?
 

Grade:11

1 Answers

Arun
25757 Points
4 years ago
the horizontal component of falling rain is 40km/hr
now convert km/hr into m/s

40*5/18=11.11m/s

vertical component of falling the rain is 20 m/s

Q=tan^-1(horizontal/vertical)

Q=tan^-1(11.11/20)

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