16 May 2012
Fastest Ball: I think my group and I have learnt that each and everyone of us have different methods to solving the same problem and we can use that to our advantage when studying academic subjects and this way we would also have a lesser chance of missing out things when we revise.
|An IR machine's wavelength graph of one of our caffeine samples|
|A packet of the caffeine itself, in a solid powder form|
|A photo of the ball rolling down the track|
A video of one of our test runs.
Fastest Ball: The reason our experiment was a success was because we positioned the ramp in the optimum configuration so that the desired amount of kinetic energy is obtained and the minimum amount of energy is lost upon contact with the horizontal ramp.
Fastest Ball: One of the limitations of this challenge is that the ball (which is moving at a relatively high speed of 1.6m/s) will hit a wooden block at the end of the track. This makes the ball (which could also be covered in oil) bounce of into random directions and might hit someone or something and cause injuries or damage.
Fastest Ball: To counter the problem mentioned above, I suggest that the wooden block be changed with one made of sponge or a similar material as these materials are more flexible and more shock absorbing. Thus, there is a less likely chance that the ball will derail and hit someone or something.
Caffeine Extraction done by: Nathaniel and Isaac
Fastest Ball done by: Yong Hong