Question text
4 A car driver travelling at constant speed in a straight line sees a hazard in the road ahead at time = 0. The speed–time graph shows how the speed of the car changes from time = 0. speed X Y 0 0 time Three students suggest what area X and area Y represent. student 1 Area X represents the thinking distance. student 2 Area Y represents the stopping distance. student 3 Area X + area Y represents the stopping distance. Which students are correct? A 1 and 2 B 1 and 3 C 1 only D 2 only
4 A car driver travelling at constant speed in a straight line sees a hazard in the road ahead at
time = 0.
The speed–time graph shows how the speed of the car changes from time = 0.
speed
X Y
0
0 time
Three students suggest what area X and area Y represent.
student 1 Area X represents the thinking distance.
student 2 Area Y represents the stopping distance.
student 3 Area X + area Y represents the stopping distance.
Which students are correct?
A 1 and 2 B 1 and 3 C 1 only D 2 only
Select your answer: