What do you need to know to determine how far a projectile travels horizontally?

check all that apply.

a. the initial direction of the projectile's velocity

b. the speed of the projectile in the horizontal direction

c. the time the projectile stays in the air

d. the vertical distance the projectile travels

If you know the initial direction of the projectile's velocity (a) and

the speed of the projectile in the horizontal direction (b), then from

that information, you can calculate the time the projectile stays in the

air (c) and the vertical distance the projectile travels (d).

If you're going for how far the projectile travels horizontally, then

you may not even need (d) at all.