The Physics of Car Racing

The  Physics of Car Racing

1.What has been done to make this a 'fair test'?
We all had the same type of model car to start off with. Also we are racing our cars in the same track and the same materials to use.

2.What forces are needed to make the car go faster and how you modified your car accrodingly?
We added rock and clay to increase the gravity to make it go faster. The gravity pushes the car down on a angle which accelerate it.

3.What forces are needed to make the car stop and what adjustment have you made to try and stop it by the line? We added rubber bands and wrapped it around the car to make it bumpy have more friciton.

4.What forces are needed to make the car travel further and what adjustments have you made to achieve this? To have more acceleration but less gravity. So we took the rock off so there's not much gravity as before. We still need a little bit of weight on top of the car so it's balanced and won't be able to flip so we kept the clay.

5.

Wind

Wind

Why does wind exist/What drives the wind?
As  global warming gets hotter, the atmosphere get warmer too. Some section of the Earth have direct rays of sun all year round and are always warm.However other parts of the Earth don't get direct sun rays, therefore the tempreture is colder. Warmer air which weigh less than cold air rises. As for the cool air, it moves to find a place warmer and replace the warm air. The movement of the cold air is what make wind move.



What are the effects of wind?
Good:     

•  Helps grow trees.
• Drives the wind turbine.
• Make waves to clean the ocean.

Bad:

• Tornado
• Sand dunes

Pictures and Videos of the experiment we did base on wind:

An activity that need wind.

https://media.giphy.com/media/N13YrmaGfDpaU/giphy.gif

Where I got my information:
http://www.weatherwizkids.com/weather-wind.htm

Car

1. What problems does  our car already have?

•  It turns when landed on the flat ground. (We can make the front part heavier because the car’s back is heavier. So it has a balance force)

• Sometimes it does a flip. (adjust the angle of the ramp. 150 degrees)

2.How do you think will make your car go faster?

To make the car heavier so there's more gravity pushing it down the ramp.

3.How do you think you will slow your car down?

Put sand paper just before the end of the green lign.

4.What equipment will we need?

• Stone
• Sandpaper.
• Clay
• rubber mands

When we placed the rock in the middle of the car it flippped so we decided to move it more forward, the first try it did it perfectly but the second try flipped again. It isn'y accurate maybe we could try a different strategy.

We decided to modify the car by putting rubber bands in the middle of the car so it has more friction so it can slow down.

(Music) Research Task >Keyboard

Music



The song I am going to learn is Castle On The Hill.

Ed Sheeran and Benny Blanco composed the song.

Ed sheeran performed the song.

The song is about his old memories.

Find a cover of the song you are working on:

I liked how there's many people involve playing different intruments.

The Physics Of Tug Of War(Friction)

Carpet
Concrete
Grass
Lino


Prediction:
 I believe that out of all of them Carpet or concrete will have the most friction because the surface is rough and  have lot of grip. So it will be the easiest to play tug of war first. Lino will be harder because it smooth and easy to slip in. Grass depends on the weather, wether it's wet or dry. Wet grass will be slippery because of the mud but dry grass will be easier to play because the grass is helping us grip.

Conclusion:
What did I find out?
I discovered that the carpet is the best for tug of war. I had a lot grip while pulling the rope. Based on my experience on the experiment I think that the most friction is the carpet and the least is the grass because it was slippery.



How was it a fair test?
The same people participated and did the same thing that we did for every ground that we tested.

Something I'm wondering.
Why does bumpy surface have the most friction.

Carpet:

Concrete:

Grass:

Lino:

What is a simple machine?

What is a simple machine?

• A machine is a system that changes the relationship between effort (the force applied) and load (the weight lifted or moved)
• Machines make our lives easier.
• Machines help us to lift,push,pull,turn,cut & join things.
• Wheels, rollers,levers,gears,and pulleys all make it easier to move a heavy load by reducing friction or magnifying forces.
  

Kete High Impact-Push and Pull

We have been learning Push and Pull forces.
I found out that the forces have to be balance for an object to stay in place.
Something I am wondering about is what if the world has less gravity.