Question

4. In which graph are both runners moving at the same speed?

Distance from starting line (yards)
Distance from starting line (yards)
30
20
10
40
8
20
10
A
d
C
A. graph A
OB. graph B
OC. graph C
OD graph D
2
3
Time (seconds)
Time (seconds)
Distance from starting line (yards)
Distance from starting line (yards)
8
20
10
9
30
20
10
B
D
2
N
3
Time (seconds)
3
Time (seconds)

Answer 1

Graph D is the only graph where both runners are moving at the same speed.

Graph D is the only graph where both runners are moving at the same speed. This is because the two lines are parallel, which means that the slope of the two lines is the same.

The slope of a distance-time graph represents the speed of the object, so if the slopes are the same, then the speeds must also be the same.

Graph A shows two runners who are moving at different speeds, with the second runner gaining on the first runner. Graph B shows two runners who are also moving at different speeds, but with the first runner gaining on the second runner. Graph C shows two runners who are both slowing down, but the second runner is slowing down at a faster rate.

Therefore, the answer is graph D.

The probable graph of the question is attached below.