Question

(b) yoko is driving on the freeway at a constant speed. she then speeds up to pass a truck. after passing the truck, she exits the freeway and slows down.

Explanation:

Step1: Analyze initial condition

She starts at a constant speed, so the speed - time graph should have a horizontal line segment initially.

Step2: Analyze speeding - up part

When she speeds up to pass the truck, the speed increases, so the graph should have an upward - sloping line segment.

Step3: Analyze post - passing part

After passing the truck, she exits the freeway and slows down, so the graph should have a downward - sloping line segment.

Answer:

The second graph (where there is an initial horizontal line for constant speed, then an upward - sloping line for speeding up, and then a downward - sloping line for slowing down)