Question

What is the average time for the toy car to move 1.0 m on tile?



Responses

20.2 s
20.2 s

24.4 s
24.4 s

28.1 s
28.1 s

60.7 s
60.7 s
Time for Toy Car to Travel 1.0 m on Different Surfaces

Surface
Time (s)

Trial 1

Time (s)

Trial 2

Time (s)

Trial 3

dirt 20.0 19.2 21.5
tile 29.1 26.7 28.5
cement 25.5 23.4 24.2

Answer 1

To calculate the average time for the toy car to move 1.0 m on tile, we need to find the average of the three trial times on the tile surface:

1. Trial 1: 29.1 s
2. Trial 2: 26.7 s
3. Trial 3: 28.5 s

To find the average, we add the times together and then divide by the number of trials:

\[
\text{Average time} = \frac{29.1 + 26.7 + 28.5}{3}
\]

Calculating the sum:

\[
29.1 + 26.7 + 28.5 = 84.3 \, \text{s}
\]

Now divide by the number of trials (3):

\[
\text{Average time} = \frac{84.3}{3} = 28.1 \, \text{s}
\]

Thus, the average time for the toy car to move 1.0 m on tile is **28.1 s**.