Max

Proposal For my major project, I intend to measure my height off of BMX jumps at different angles. I shall make sure I am travelling the same speed towards all of the different jumps by using either a bicycle speedometer or a speed radar gun. I will take photos of all the jumps from the same distance and angle then measure the jumps on a computer. to measure my height, I will use a camera as well. possibly a video camera to see the entire jump and pick out the highest point to measure. I wish to measure my height from about 10 different-angled jumps then try and work out a rule for higher and lower angles than one can actually jump. I also want to try and make two different rules at different speeds or maybe with different sized wheels to see what the differences are. I think my question will read something like this: **"How does the angle of a jump affect the rider's height?"**  Variables ** Question: ** How does the angle of a BMX jump affect the rider’s height above it?

Angle of jump
 * Independent variable: **

My height above the jump
 * Dependent variable: **

· My speed going up to the jump · My weight · The bike’s weight · The Earth’s gravitational pull
 * Controlled variable: **

Hypothesis I hypothesise that assuming that my weight and speed stay constant throughout the entirety of the experiment; the angle of the jump will determine my height and the time that I spend in the air. Materials · BMX bike w/ 16” wheels · BMX jumps ranging in angles and heights · Digital camera w/ tripod · Computer with video processing program (iMovie/Windows Movie Maker) · A ruler/angle measurement device · A speed camera or speedometer with 0.1 km/h accuracy