A pilot flying low and slow drops a weight; it takes 3.2s to hit the ground, during which it travels a horizontal distance of 155m . Now the pilot does a run at the same height but twice the speed. How much time does it take the weight to hit the ground?

Answer 1

Hint: What affect does horizontal velocity have on vertical fall?

Use: vector displacement equation.
x(t) î + y(t) ĵ = [x(0) + u(0)t] î + [y(0) + v(0)t - ½ gt^2] ĵ

x_t î + y_t ĵ = (x₀ + u₀ t) î + (y₀ + v₀ t - ½ g t²) ĵ