A projectile is thrown with a velocity of 39.2 m/s on the upward direction making an angle of 60^@ with horizontal . Find time after which the inclination is 40^@ with horizontal.

A projectile is thrown with a velocity of 39.2 m/s on the upward direc

1.	A projectile is thrown with a velocity of 39.2 m/s on the upward direction making an angle of 60^@ with horizontal . Find time after which the inclination is 40^@ with horizontal.
Answer» SOLUTION :LET the required time be t, `S= UT + 1/2 at^2` `39.2 = 29.4 xx t- 1/2 xx 9.8 t^2` `4.9 t^2- 29.4t +39.2= 0` solve for t.

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A projectile is thrown with a velocity of 39.2 m/s on the upward direction making an angle of 60^@ with horizontal . Find time after which the inclination is 40^@ with horizontal.

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