Blog update

Today I went into the design room and went to trying to create a design using the materials avaliable. I came up with the idea to use foam as the platform or base if my kart. It is light but sticks together well I have also thought of placing some of the compartment inside the foam but then Laura came up with the same idea so undecided to try something else. Instead of Putting the elements inside it, I'll suppress it in slightly to connect it and make it more attached to the foam and reduce air friction slightly. I also think I will put a bit if a 'windshield' at the front to direct the air so it does not get caught too much an create air resistance. I also am going to sand paper the front down alot so it slowly builds up like in the actual drag cars.

Chocolate competition

Kinetic energy

Notes on friction

Forces on a kart

I have a journal that I am using this term so I will e taking pictures from it and putting it on

TERM 3

For the previous lessons we have been looking over what we are going to be doing in our upcoming unit in which we are designing a kart that will race along a track. In order to complete this assessment I will need to find out (through trial and error as well as mathematical equations) which design will help the kart be propelled faster down the track.

Variables that will effect the speed will include
- weight (KE = 1/2 mv)
- how close the battery is to the gear box (how much energy is wasted in traveling through the wires)
- the shape of the kart (how streamlined it is will effect the air resistance)
- what gears to use (fast acceleration but slow overall speed or slow start but higher full speed)
- the friction in the wheels to the ground, the gear wheels, (what lubricants to use)

We will also have some theory work to do after the assessment which will include finding the velocity, acceleration, and KE.

Kinetic, Potential and Chemical energy

Research & supply appropriate responses;

­­­­­­­

1.    Provide a definition of the word Kinetic energy, Potential energy and chemical energy (different sources

KINETIC ENERGY:

http://www.physicsclassroom.com/class/energy/u5l1c.cfm

·        Expressed by the equation: KE = ½ x m x v² . This shows that the value of kinetic energy relies on the mass and velocity (or speed) of the object.

·        Kinetic energy is the energy of motion, whatever moves has kinetic energy

·        E.g. a moving kart has kinetic energy as it is moving,

POTENTIAL ENERGY:

http://www.physicsclassroom.com/class/energy/U5L1b.cfm

·        PE = m x g x h.

·        This form of energy depends on its elevation or position.

·        It is often related to kinetic energy as potential converts into kinetic and visa versa

·        E.g. a stretched bow contains a lot of kinetic energy

CHEMICAL ENERGY:

http://www.eschooltoday.com/energy/kinds-of-energy/what-is-chemical-energy.html

·        Chemical energy is stored in atoms and molecules (bonds of chemical compounds) and is released in chemical reactions (often in the form of heat)

·        Eg. Firewood has chemical energy. When it is lit it converts into thermal and light energy.

2.    Give an example an example for each type As shown above

3.    State the law associated with the conservation of energy (http://library.thinkquest.org/2745/data/lawce1.htm)

The law of conservation of energy states that energy cannot be created or destroyed but only changing in form. One of the most common examples of this is the newton’s cradle; when the ball is released and hits the clump of balls, the ball at the end flies out to a similar height – thus showing that the energy has been converted from the original ball onto the ball at the other end. The balls eventually rise to a lower height and stop because as well as energy being released as kinetic energy (from potential) but also into sound energy. 

Kinetic, Potential and Chemical energy

Research & supply appropriate responses;

­­­­­­­

1.    Provide a definition of the word Kinetic energy, Potential energy and chemical energy (different sources

KINETIC ENERGY:

http://www.physicsclassroom.com/class/energy/u5l1c.cfm

·        Expressed by the equation: KE = ½ x m x v² . This shows that the value of kinetic energy relies on the mass and velocity (or speed) of the object.

·        Kinetic energy is the energy of motion, whatever moves has kinetic energy

·        E.g. a moving kart has kinetic energy as it is moving,

POTENTIAL ENERGY:

http://www.physicsclassroom.com/class/energy/U5L1b.cfm

·        PE = m x g x h.

·        This form of energy depends on its elevation or position.

·        It is often related to kinetic energy as potential converts into kinetic and visa versa

·        E.g. a stretched bow contains a lot of kinetic energy

CHEMICAL ENERGY:

http://www.eschooltoday.com/energy/kinds-of-energy/what-is-chemical-energy.html

·        Chemical energy is stored in atoms and molecules (bonds of chemical compounds) and is released in chemical reactions (often in the form of heat)

·        Eg. Firewood has chemical energy. When it is lit it converts into thermal and light energy.

2.    Give an example an example for each type As shown above

3.    State the law associated with the conservation of energy (http://library.thinkquest.org/2745/data/lawce1.htm)

The law of conservation of energy states that energy cannot be created or destroyed but only changing in form. One of the most common examples of this is the newton’s cradle; when the ball is released and hits the clump of balls, the ball at the end flies out to a similar height – thus showing that the energy has been converted from the original ball onto the ball at the other end. The balls eventually rise to a lower height and stop because as well as energy being released as kinetic energy (from potential) but also into sound energy.