projectile is fired at an initial height h = 100.0 m above the ground at time t=0, at an angle 38.0 ? with respect to the horizontal. It has an initial speed v0 = 60.0 m/s . The magnitude of the gravitational acceleration is g = 9.8 m/s2. Find tR, the time at which the projectile hits the ground after having traveled through a horizontal distance R. Keep 3 digits after the decimal point. Unit is seconds.

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