Question

A flare is dropped from a plane flying over level ground at a velocity of 70m/s in the horizontal direction. At the instant the flare is released, the plane begins to accelerate horizontally at 0.75m/s² 

(A) directly on the spot. 

(B) 6.0 m in front of the spot. 

(C) 274 m in front of the spot. 

(D) 280 m in front of the spot. 

(E) 286 m in front of the spot. 

Answer 1

Correct option (D) 280 m in front of the spot.

In the 4 seconds to reach the ground, the flare travelled 70m/s × 4s = 280m horizontally.