the distance a toy car travels over time is s...
the distance a toy car travels over time is shown in the graph. motion of a toy car which table best shows the average speed of the toy car at different time intervals? a time (s) average speed (m/s) 0 - 2 1.0 2 - 4 0.5 4 - 6 0 c time (s) average speed (m/s) 0 - 2 2.0 2 - 4 3.0 4 - 6 3.0 b time (s) average speed (m/s) 0 - 2 2.0 2 - 4 0.75 4 - 6 0.75 d time (s) average speed (m/s) 0 - 2 1.0 2 - 4 0.75 4 - 6 0
Answer
# Explanation:
## Step1: Recall average - speed formula
The average speed formula is $v = \frac{\Delta d}{\Delta t}$, where $\Delta d$ is the change in distance and $\Delta t$ is the change in time.
## Step2: Analyze 0 - 2 s interval
From the graph, at $t = 0$, $d = 0$; at $t = 2$, $d = 2$. So, $\Delta d=2 - 0=2$ m and $\Delta t = 2-0 = 2$ s. Then $v=\frac{2 - 0}{2 - 0}=1$ m/s.
## Step3: Analyze 2 - 4 s interval
At $t = 2$, $d = 2$; at $t = 4$, $d = 3$. So, $\Delta d=3 - 2 = 1$ m and $\Delta t=4 - 2=2$ s. Then $v=\frac{3 - 2}{4 - 2}=0.5$ m/s.
## Step4: Analyze 4 - 6 s interval
At $t = 4$, $d = 3$; at $t = 6$, $d = 3$. So, $\Delta d=3 - 3 = 0$ m and $\Delta t=6 - 4=2$ s. Then $v=\frac{3 - 3}{6 - 4}=0$ m/s.
# Answer:
A. Time (s): 0 - 2, Average Speed (m/s): 1.0; Time (s): 2 - 4, Average Speed (m/s): 0.5; Time (s): 4 - 6, Average Speed (m/s): 0