### Home > PC > Chapter 10 > Lesson 10.2.3 > Problem 10-105

10-105.

Review the Math Notes box in Lesson 10.2.3 titled Projectile Motion.

First, determine the amount of time it takes for the ball to hit the ground. This occurs when *y*(*t*) = 0.

Once you have determined when *y*(*t*) = 0, substitute this *t*-value into *x*(*t*) to determine the horizontal distance the ball has traveled.