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A plane flying horizontally at 100 m s^-...

A plane flying horizontally at `100 m s^-1` releases an object which reaches the ground in `10 s`. At what angle with horizontal it hits the ground ?

A

100 cm

B

50 cm

C

40 cm

D

20 cm

Text Solution

Verified by Experts

The correct Answer is:
b
`v_(x) = 98 ms^(-1), v_(y) = gt = 9.8 xx 10 = 98ms^(-1), tan theta = v_(y)//v_(x) = theta = 45^(@)`
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