- How does the material from which a baseball bat is made affect performance? How does a wood bat compare with an aluminum bat?
- Does altitude affect the height of a ball bounce (for example, a golf ball)? If an effect is seen, can you attribute it to the effect of gravity or atmospheric pressure?
- Examine the effect of energy bars on performance. Pick a sport. Is there a difference in performance if you use a protein-boosting energy bar versus a carbohydrate-boosting energy bar?
- What is the effect of using a corked baseball bat compared with a normal one?
- Does drinking an energy drink (or sports drink) affect reaction time? memory?
- Are there really streaks in baseball? Or is it simply chance?
- Compare energy drinks based on cost, taste, short term effect, and long term effect.
- Which sports drink contains the most electrolytes?
- How is ball diameter related to the time it takes the ball to fall?
- Does the length of a golf club affect the distance you can hit the ball?
- Does a swim cap really reduce a swimmer's drag and increase speed?
- How does exercise affect heart rate?
- Does exercise affect reaction time?
- Does regular exercise affect memory?
- At what slope angle is the mechanical advantage of a bicycle lost, as compared with running?
- Compare different brands of balls for a sport (like baseball or golf) for cost versus performance.
- Do helmets really protect against a crash? (presumably tested with a simulant, like a watermelon)
- What is the best air pressure for a soccer ball?
- How does temperature affect the accuracy of a paintball shot?
- Does altitude, temperature, or humidity have an affect on the number of home runs seen at a baseball diamond?
- Does the presence or absence of a net affect freethrow accuracy?
