:sarah, who is 19 feet away from justin, has a ball in her hand. sarah throws the ball away from justin at a speed of 5 feet per second. it takes the ball 4 seconds to reach a third friend, brandon. when the ball reaches brandon, how far away is it from justin?

Justin is 1 feet far away from Brandon

Step-by-step explanation:

As shown in the diagram, we let the distance between Justin and Brandon be x

from the question

the total time taken by the ball to reach Brandson=4s

Also the total distance is travelled by the ball=19+x

while the average speed=5ft/s

By substitution we obtain

x=1 feet

the answer is two. hope this !