Mass
What is mass?
The amount of matter in an object (WEIGHT)
What is friction?
A force that resists motion between two surfaces.
What is air resistance also called?
Drag
Why do we have design restrictions?
To make it fair and safe
How many players are on the field for one soccer team?
11
True or false: A heavier car always goes faster?
False
Where does friction occur on your CO2 dragster?
Between the wheels and axels, wheels and track, eyelets and guiding string
What shape reduces air resistance?
What part of the dragster must hold the CO2 cannister?
The rear of the car (chamber or cavity)
What sport uses a ball and bases?
Baseball or softball
How does reducing mass usually affect a dragster's speed?
It makes it faster because there's less resistance to acceleration
Name one way to reduce friction on your dragster?
Use graphite or lubrication on axels, make sure you sand your dragster so it's smooth.
Why does a flat front increase drag?
It pushes against more air
Why can't the car be too narrow?
The axel and wheels wouldn't fit or roll properly.
What country hosts the Wimbledon tennis tournament?
England
What's one way to reduce the mass of your CO2 dragster body?
Drill holes, remove excess material, use lighter wood.
How does friction affect speed?
More friction = slower dragster. Less friction = faster dragster.
Name one way to test or observe air resistance on your dragster?
Blow air over it, use a wind tunnel or test with different shapes.
What could happen if the CO2 chamber isn't aligned straight?
The car could veer off the track or break.
What NRL (Rugby League) team is based on the Gold Coast
The Titans
Why is it important not to make your dragster too light?
It could become unstable OR break when the CO2 canister fires.
What's one disadvantage of having too little friction?
The car might lose control, slip or wobble on the track
What happens to drag as speed increases?
Drag increases (the faster you go, the more air pushes back).
Justify your answer.
In sprinting (running) what force pushes runners forward - Friction or drag? And tell me what that happens?
Friction - Between the runners' shoes and the track.