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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 4 - Motion in 2 Dimension > A projectile is thrown in the upward direction making an angle of 60^∘ with the horizontal direction with a velocity of 150 ms^−1. Then the time after which its inclination with the horizontal is 45^∘ is

A projectile is thrown in the upward direction making an angle of 60^∘ with the horizontal direction with a velocity of 150 ms^−1. Then the time after which its inclination with the horizontal is 45^∘ is

A particle starts from the origin with a velocity of 10ms^−1 and moves with a constant acceleration till the velocity increases to 50ms^−1. At that instant the acceleration is suddenly reversed. What will be the velocity of the particle when it returns to the starting point?