First slide

Projection Under uniform Acceleration

Question

A bomber is flying horizontally with a constant speed of 150 m/s at a height of 78.4 m. The pilot has to drop a bomb at the enemy target. At what horizontal distance from the target should he release the bomb ?

Easy

A

0 m
B

300 m
C

600 m
D

1000 m

Solution

$Time of flight = \sqrt{\frac{2 h}{g}} = \sqrt{\frac{2 \times 78.4}{9.8}} = 4 s$
Horizontal range R = 150 x 4 = 600 m

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