Question

A projectile travels in the horizontal direction at a velocity of 200.0 meters/second from a cliff that is 200.0 meters high. After how many seconds will the projectile reach the ground level?

Answer 1

kinematics equation, in the vertical directin

h = 1/2(at^2) + (v_o)t
where h is the height of the cliff, a is the acceleration due to gravity, v_o is the initial velocity, and t is time. solve for t.