Problem 1 A projectile is red at an angle 9 above the ground with an initial speed of 2m. Find an expression for the horizontal position a: of the projectile when it hits the ground in terms of 110, 6, and g (the acceleration due to gravity). Start with the kinematic equations for 35(t) and y(t). Use y = 0. Then eliminate time t. Note that sin(2l9) = 2 cos 9 sin 6