Question

calculating speed

trial a | trial b
distance traveled (m) | 4.0 | 4.0
time (initial) (s) | 2.0 | 1.5
time (final) (s) | 3.5 | 4.5
elapsed time (s) | 1.5 |
average speed (m/s) | 2.7 |

use the data table on the left to complete the calculations.

what is the elapsed time for trial b? s

what is the average speed for trial b? m/s

Explanation:

Step1: Calculate elapsed time for Trial B

Elapsed time = Time (final) - Time (initial). For Trial B, Time (final) is 4.5 s and Time (initial) is 1.5 s. So, elapsed time = \( 4.5 - 1.5 = 3.0 \) s (this matches the given value, just verifying).

Step2: Calculate average speed for Trial B

Average speed formula is \( \text{Average speed} = \frac{\text{Distance traveled}}{\text{Elapsed time}} \). Distance traveled for Trial B is 4.0 m, elapsed time is 3.0 s. So, average speed = \( \frac{4.0}{3.0} \approx 1.33 \) m/s (or as a fraction \( \frac{4}{3} \approx 1.33 \)).

Answer:

1.33 (or \( \frac{4}{3} \) or approximately 1.3)