Question

1. a student conducted a lab investigation to calculate his average speed while walking and running up the stairs.

trials	force (n)	distance (m)	time (sec)	avg. time (sec)
walk 2	623	4.12	23.03	19.7
run 1	623	4.12	4.15	4.13
run 2	623	4.12	4.10	4.13

calculate the average speed of the student did while walking up the stairs.
38 m/s
0.20 m/s
151 m/s
1.00 m/s
clear all

Explanation:

Step1: Recall speed formula

The formula for speed is $v = \frac{d}{t}$, where $v$ is speed, $d$ is distance, and $t$ is time. For average - speed while walking, we use the average time for walking trials.

Step2: Identify values

The distance $d = 4.12$ m and the average time for walking $t = 19.7$ s.

Step3: Calculate average speed

$v=\frac{4.12}{19.7}\approx0.20$ m/s

Answer:

0.20 m/s