Alternative Energy Vehicle And Fire Away Project

Alternative Energy Vehicle

Process:

Our car has three wheels made each of two CDs. One wheel has a hook so that the rubber band is wrapped around the axle of the wheel. Once we release the car the rubber band unravels and causes the wheels to move, moving the car.

To build this car we started in the maker space. We started by cutting out a section on the main board for the one front wheel. Then we we took a pvc pipe and cut them into three little axles. Then we hot glued one CD to each side of the pvc axle. We did this three times. We then cut three section of a wooden dowel and put them through the CDs and pvc pipes. We then hot glued that to the bottom of the main board.

We then put a nail in the front wheel and added a long board to the end of the board with a nail on the end as well. We then strung together three to four rubber bands to hook onto the end of the long board. We then hooked it onto the nail on the front wheel and wrapped it around the wheel. Once we set the car down and released it the rubber band unraveled and causes the rest of the wheels to move.

STEM car project

Our Alternative Energy Presentation

Spring Potential Energy

The energy stored in an object due to expansion or compression. You can find this with the equation PE=(0.5)(K)x². K is equal to the srping constant and X is equal to the distanmce stretched.

Gravitational Potential Energy

energy an object has due to its position at a height or in a gravitational field. The equation for this was PE gravity= (mass)(acceleration of gravity(height). There was no gravitational potential energy because our car was on the ground the whole time.

Kinetic Energy

The energy due to motion. Some of the potential energy is transferred to kinetic energy. The formula for this is KE=(0.5)m²

Total Energy

All the energy the object in motion possesses. This is the total energy of everything. Our total energy was 12.95 (all meters).

Thermal Energy

The energy transferred to heat. In our project all of the potential and kinetic energy transfers to thermal energy.

you can see a quick spike in the velocity in the beginning and then it goes down. This is because of the car is winded up all the way in the beginning.

Graphs to Time and Distance as well as Velocity and Time:

Rotational Inertia

Rotational Inertia is the law that an object rotating about an axis tends to keep rotating around that axis. It is a way of showing how stable something is.

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