4. Han and Clare walk towards each other at a constant rate, meet up, and then continue past each other in opposite directions. We will call the position where they meet up 0 feet and the time when they meet up 0 seconds.
Han's velocity is 4 feet per second.
Clare's velocity is -5 feet per second.
a. Where is Han 10 seconds before they meet up?
b. Where is Clare 10 seconds before they meet up?
a. Han is walking towards Clare at a velocity of 4 feet per second, so 10 seconds before they meet up, he would be 40 feet away from the meeting point in the direction he is walking. Therefore, Han would be at 40 feet towards Clare 10 seconds before they meet up.
b. Clare is walking towards Han at a velocity of -5 feet per second, so 10 seconds before they meet up, she would be 50 feet away from the meeting point in the direction she is walking. Therefore, Clare would be at 50 feet towards Han 10 seconds before they meet up.