Question

A particle is thrown in upward direction making an angle of 60 degree with the horizontal direction with a velocity of 147 m/s. Then the time after which its inclination with the horizontal is 45 degree is: A- 1.5 sec B- 10.98 sec C- 5.49 sec D- 2.746

Answer 1

Ans. is (C) 5.49 sec.... solution is in the pic :)