1.

A car with a vertical windshield moves in a rainstorm at a speed of 40 km/hr. The rain drops fallvertically with constant speed of 20 m/s. The angleat which rain drops strike the windshield is

Answer»

The horizontal component of falling rain is 40km/hrnow 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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