Physics Vectors Math

Question

A projectile is launched at ground level with an initial speed of 50.0 m/s at an angle of 30.0º above the horizontal. It strikes a target above the ground 3.00 seconds later.

What is the x distance from where the projectile was launched to where it lands

Answer 1

The horizontal motion occurs at constant speed.  The time of flight is 3 s.

 

x = v₀cosθ t = (50.0 m/s)(cos30°)(3.00 s) ≅ 129.9 m