A projectile is thrown in the upward direction making an angle of 60°with the horizontal direction with a velocity of 147 m/s.Then, the time after which it’s inclination with the horizontal is 45°,is

Options

(a) 15 s
(b) 10.98 s
(c) 5.49 s
(d) 2.745 s

Correct Answer:

5.49 s

Explanation:

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