Question

question 7 (1 point)
which graph(s) represents a constant velocity?
a) a and c\t\tb) b and c
c) c\t\td) a and b

a

b

c

d

Explanation:

Step1: Recall velocity-displacement relation

Velocity $v = \frac{\Delta x}{\Delta t}$, the slope of displacement-time graph.

Step2: Analyze graph a

Horizontal line: $\Delta x=0$, so $v=0$ (constant).

Step3: Analyze graph b

Straight line: constant slope, so $v$ is constant.

Step4: Analyze graph c

Curved line: increasing slope, so $v$ increases.

Step5: Identify valid graphs

Graphs a and b have constant velocity.

Answer:

d) a and b