Question

2 multiple choice 0.5 points during which interval is the cars velocity positive? x (meters) 6 e 5 a 4 to 3 and e? vhich 2 d 1 b c t (hours) 1 2 3 4 5 6 d to e a to b a to start b to c

Explanation:

Step1: Recall velocity on x-t graph

Velocity is the slope of the position-time ($x$-$t$) graph, $v = \frac{\Delta x}{\Delta t}$. Positive velocity means positive slope (position increases with time).

Step2: Analyze each interval slope

• A to B: $\Delta x = 1.5-4=-2.5$, $\Delta t=1.5-0=1.5$, slope negative.
• B to C: $\Delta x = 1.5-1.5=0$, slope zero.
• A to start: $\Delta x = 4-4=0$, slope zero.
• D to E: $\Delta x = 5-2=3$, $\Delta t=6-5=1$, slope positive.

Answer:

D to E