Friction

brake and wheel of a car

What is friction? Do you know how it relates to the weight of the object you are trying to move?

What is the difference amongst the Tamiya Mini 4WD sponge brake pads?

Tamiya Mini 4WD Sponge brake pads green, blue, black, white, grey and red

Do you know how to rank the Tamiya Mini 4WD brake sponge pads according to their stopping power? Do you know which one is the strongest? Is hard better than soft? Is red stronger than black? We conducted a scientific experiment to measure the frictional properties of the different brake pads and rank them according to their stopping power.

Distance, time and speed

Car speedometer (source: pexels-pixabay-248747)

What is speed? How does it relate to distance and time? Let’s explore using Mini 4WDs as example.