Xtreme STEM
DashX

Hot Wheels Velocity Lab - Jr

Introduction

You are going to experiement with three different variables to find the fastest car on the fastest track!

Things to change:
  1. Type of Car (Lamborghini, truck, race car, etc)
  2. Shape of the track (straight, curved, bumpy, etc)
  3. Starting Position (How far from the start of the track the race starts)
 

Keep the same:

  1. Height of track at the starting point (must be height of the table)

1) Starting Position

Start Distance cm Time s Velocity cm/s
Top      
Middle      
Bottom      

 

 

  1. Choose one car (don't switch cars)
  2. Setup a straight track (don't change the shape of the track)
  3. Choose and record a starting position
  4. Measure the distance the car will travel (in cm)
  5. Measure the time it takes the car to travel that distance (in sec)
  6. Calculate the velocity of the car (distance ÷ time)
  7. Record the starting point and your measurements and caluclations in Excel
  8. Repeat for 5 different starting points
  9. Question: Which starting point was the fastest? Why?

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2) Track Shape

Shape Distance cm Time s Velocity cm/s
A-Straight      
B-Curve      
C-Drop      
D-Hill      
E-Yours      

 

 

  1. Choose one car (don't switch cars)
  2. Setup one of the track shapes shown below
  3. Always start at the top of the track
  4. Measure the distance the car will travel (in cm) (hint: it should be the same for all track shapes)
  5. Measure the time it takes the car to travel that distance (in sec)
  6. Calculate the velocity of the car (distance ÷ time)
  7. Record the track shape and your measurements and caluclations in Excel
  8. Repeat for the 4 different track shapes shown
  9. Invent your own track shape and repeat the velocity measurement
  10. Question: Is a straight line the fastest way? Why or Why not?

dirtdirt

dirtdirt

3) Car Type

Car Distance cm Time s Velocity cm/s
1      
2      
3      
4      
5      

 

 

  1. dirtSetup the fastest track shape you found
  2. Always start at the top of the track
  3. Choose a car (you can trade with other groups and/or use your own cars)
  4. Measure the distance the car will travel (in cm)
  5. Measure the time it takes the car to travel that distance (in sec)
  6. Calculate the velocity of the car (distance ÷ time)
  7. Record the car-type and your measurements and caluclations in Excel
  8. Repeat for at least 5 different cars
  9. Question: Which car was the fastest? Why?

 

 

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