Instructions
- Read the short introductory text about the science of racing before starting the activities.
- Complete the Racing Vocabulary Match-Up to test your knowledge of car mechanics.
- Use your math skills to complete the Pit Stop Performance table.
- Solve the Race Day Scenarios by applying logic and physics concepts.
- Take on the Speedway Challenge at the end for an extra point!
- Use the space provided for your drawings and calculations.
The Science of Speed
Racecar driving isn't just about pressing the gas pedal; it’s a high-speed game of physics and strategy. Engineers work to reduce drag (air resistance) and increase downforce (the force that pushes the car into the track for better grip). Drivers must understand how friction affects their tires and how inertia makes it harder to turn at high speeds. Every millisecond counts!
Part 1: Racing Vocabulary
Match the racing term on the left with its correct definition on the right by writing the corresponding letter in the blank space.
- ____ Aerodynamics A. The resistance a car faces when moving through air.
- ____ Drafting B. The study of how air moves around objects.
- ____ Friction C. Following closely behind another car to reduce wind resistance.
- ____ Downforce D. The "grip" between the rubber tires and the asphalt track.
- ____ Apex E. The sharpest part of a turn where the driver is closest to the inside curb.
- ____ Drag F. A downward pressure created by the car's shape to keep it from lifting.
Part 2: Pit Stop Performance
A race can be won or lost in the pits! A standard pit stop involves changing 4 tires and refueling. In the table below, calculate the Total Pit Time by adding the Tire Change time and the Refuel time. Then, calculate how many seconds were saved compared to the "Target Time" of 12 seconds.
| Crew Member | Tire Change (sec) | Refuel (sec) | Total Pit Time | Seconds Saved/Lost |
|---|---|---|---|---|
| Example: Marco | 6.5s | 4.2s | 10.7s | +1.3s (Saved) |
| 1. Sarah | 7.2s | 5.1s | ||
| 2. Jax | 5.8s | 6.4s | ||
| 3. Elena | 6.1s | 4.9s | ||
| 4. David | 8.0s | 5.5s | ||
| 5. Riley | 5.5s | 4.1s |
Part 3: Race Day Scenarios
Read the following situations and circle the best choice. Briefly explain why you chose that answer.
Scenario A: The Rain Delay It starts raining halfway through the race. The track is now slippery. Which tires should you switch to?
- A) Slick Tires (Smooth surface, no grooves)
- B) Treaded Tires (Deep grooves to channel water away)
Why? __
Scenario B: The Final Stretch You are in 2nd place, right behind the leader. There is a strong headwind. Should you stay directly behind the leader or try to pass them immediately on the straightaway?
- A) Stay behind (Use drafting to save fuel and build speed)
- B) Pass now (Fight the wind on your own)
Why? __
Part 4: Track Design Challenge
In the box below, sketch a small section of a race track. Include one Sharp Hairpin Turn and one Long Straightaway. Label where the Apex of the turn is located and draw an arrow showing where a car would experience the most Drag.
| [ Space for Drawing ] |
|---|
Part 5: The Speedway Challenge (Advanced)
If a racecar travels at a constant speed of 200 miles per hour (mph), how many miles will it travel in 15 minutes?
(Hint: How many 15-minute segments are in one hour?)
Answer: ____ miles
Answer Key
Part 1: Vocabulary
- B, 2. C, 3. D, 4. F, 5. E, 6. A
Part 2: Pit Stop Math
- Sarah: 12.3s (-0.3s Lost)
- Jax: 12.2s (-0.2s Lost)
- Elena: 11.0s (+1.0s Saved)
- David: 13.5s (-1.5s Lost)
- Riley: 9.6s (+2.4s Saved)
Part 3: Scenarios Scenario A: B (Treaded Tires). Grooves allow water to escape so the rubber can touch the road, preventing hydroplaning. Scenario B: A (Stay behind). Drafting reduces the work your engine has to do against the wind, allowing you to "slingshot" past at the last moment.
Part 4: Drawing (Visual assessment: Apex should be at the innermost point of the curve; Drag arrows should be on the straightaway facing against the car's direction.)
Part 5: Speedway Challenge 50 miles. (15 minutes is 1/4 of an hour. 200 ÷ 4 = 50).