# Speed Challenge Lab

### By: Shreya Tamma

## Purpose

The purpose of this lab is to practice calculating speed.

## Hypothesis

If testing the different movements (walking, speed walking, walking backwards, and hopping), then the expected results (from fastest to slowest) would be: speed walking, hopping, walking backwards, and walking.

## Materials

· Meter Stick

· Timer

· Tape

## Procedures

1) Measure 10 meters with your meter stick and mark it using tape.

2) Have one person standing, ready to start moving.

3) Have another person ready to start the timer.

4) Start trial 1 by completing a certain movement (the different movements are walking, speed walking, walking backwards, and hopping).

5) Time trials 2 and 3 using the same movement, and then record your data.

6) Repeat steps 4 and 5 using the other 3 movements, and then record your data.

7) Calculate a speed for each trial *(speed = distance/time)*.

8) Calculate an **average speed **by adding all three speeds (for each movement) and dividing by 3.

## data Table

## Graph

## Conclusion

My hypothesis was incorrect. I had predicted that my results (from fastest to slowest) would be: speed walking, hopping, walking backwards, and walking. Instead, my results (from fastest to slowest) showed this: hopping, speed walking, walking backwards, and walking. The speeds were 2.5 m/s, 2.0 m/s, 1.5 m/s, and 1.2 m/s respectively. (Human error in this experiment is possible because the more you move, the more tired you get, and therefore, in your 1st trial, you might have a speed of 3.5 m/s, whereas in your 3rd, you might have a speed of 0.5 m/s.) From the data I collected, I can say that certain activities, such as hopping, will take me less time to cover a certain distance (10 meters) as compared to a slower activity such as speed walking, which will take me more time to cover the same distance (10 meters). Therefore, I can say that hopping had a greater speed than speed walking during my trials.