Question

speed challenge lab d÷t
get ready!
step 1: gather your materials!
each team needs 2 timers, 1 meterstick, 1 roll of masking tape, and 1 marker.
step 2: create your “race” track!
find a spot in the hallway and measure off a 10 - meter race track. use three pieces of tape to mark the beginning, middle, and end of your track. mark each distance (0 m, 5 m, and 10 m) on the tape with a marker.
step 3: go for it!
each team member will need to perform the following tasks for each distance: hopping, walking backwards, walking (regular rate), and speed walking. your team will need people with timers or stopwatches at the 5 - meter and 10 - meter points. record the time it takes to perform each task.
note: speed walking is going as fast as you can without jogging or running!
collect that data!
record your data from the experiment in the chart, then use the information to calculate the speed for each task and distance. round answers to the nearest hundredth if needed. label your answers!
task distance time speed
hopping 5 m 4.02
10 m 6.72
walking backwards 5 m 4.39
10 m 10.03
walking regular 5 m 3.47
10 m 7.61
speed walking 5 m 3.05
10 m 5.45

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.

Step2: Calculate speed for hopping 5m

For hopping over a distance $d = 5$m and time $t=4.02$s, $v=\frac{5}{4.02}\approx1.24$m/s.

Step3: Calculate speed for hopping 10m

For hopping over a distance $d = 10$m and time $t = 6.72$s, $v=\frac{10}{6.72}\approx1.49$m/s.

Step4: Calculate speed for walking backwards 5m

For walking backwards over a distance $d = 5$m and time $t=4.39$s, $v=\frac{5}{4.39}\approx1.14$m/s.

Step5: Calculate speed for walking backwards 10m

For walking backwards over a distance $d = 10$m and time $t = 10.03$s, $v=\frac{10}{10.03}\approx0.99$m/s.

Step6: Calculate speed for regular walking 5m

For regular - walking over a distance $d = 5$m and time $t=3.47$s, $v=\frac{5}{3.47}\approx1.44$m/s.

Step7: Calculate speed for regular walking 10m

For regular - walking over a distance $d = 10$m and time $t = 7.61$s, $v=\frac{10}{7.61}\approx1.31$m/s.

Step8: Calculate speed for speed - walking 5m

For speed - walking over a distance $d = 5$m and time $t=3.05$s, $v=\frac{5}{3.05}\approx1.64$m/s.

Step9: Calculate speed for speed - walking 10m

For speed - walking over a distance $d = 10$m and time $t = 5.45$s, $v=\frac{10}{5.45}\approx1.83$m/s.

Answer:

Task	Distance	Time	Speed
Hopping	10 m	6.72 s	1.49 m/s
Walking Backwards	5 m	4.39 s	1.14 m/s
Walking Backwards	10 m	10.03 s	0.99 m/s
Walking Regular	5 m	3.47 s	1.44 m/s
Walking Regular	10 m	7.61 s	1.31 m/s
Speed Walking	5 m	3.05 s	1.64 m/s
Speed Walking	10 m	5.45 s	1.83 m/s