A. 8 s
B. 4 s
C. 16 s
D. 10 s
Correct Answer:
Option B – 4 s
Explanation
For a body projected at an angle θ to the horizontal, the time of the flight is given by T = (2u sin θ)/g =(2x 40)x sin (30)/10 =(2 x 40) x (0.5)/10 = 4.0secs.
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