How do you solve motion in two directions problems in physics?
Projectile problems: You use the angle with horizontal to resolve the initial speed into x and y velocity components. Like vx = s cos(theta) and vy = s sin(theta) where s is the speed and theta the angle with horizontal. Then, you work the two directions sort of independently. In the x direction horizontal to the ground the projectile travels at constant speed so your equation is just dx = vx * t In the y direction the projectile starts traveling up but slows from gravity pulling it back. The equation is dy = vy * t – (g/2)*t^2. Usually we do it this way so that dy = 0 at ground level. One thing to be careful about is putting all your known quantities into a consistent set of units like m/s, m/s^2, m and s. Then you put the known quantities into the equations and solve for the unknown. If you have trouble getting started, you might try writing down the four equations I give here on your work sheet and then begin identifying which quantities you know and which you don’t. Another thing t
