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Download the 7 sprites and 8 scripts of "Kinetic Energy" and open it in Scratch Project Notes
Experiment Potential Energy and Kinetic Energy of a ball as raised above the ground. The ball's mass and the gravity acting on it can also be changed to gauge the effect on the experiment.
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Sorry this didn't format correctly. There's something wrong the site with how end of line is handled.
I think this is not correct. The sum of the potential and kinetic energy must be constant. Potential energy is described here: http://en.wikipedia.org/wiki/Potential_energy The formula is: energy(joules) = mass(kg) * gravity(9.8 m/(s^2)) * height(m) Kinetic energy is described here: http://en.wikipedia.org/wiki/Kinetic_energy The formula is: energy(joules) = (mass(kg) * ( velocity(m/s) ^ 2) / 2 To get the velocity or distance at a point in time you need to use the formulas found here: http://en.wikipedia.org/wiki/Equations_for_a_falling_body Applying all this to a mass of 5 kg dropped from a height of 3 meters gives the following results. Notice that potential energy plus kinetic energy always equals 147 joules. Height Dist Time Mass Gravity Potent Speed Kinetic P+K (m) (m) (s) (kg) (m/s2) (J) (m/s) (J) (J) 3 0 0.00 5 9.8 147 0.00 0 147 2.9 0.1 0.14 5 9.8 142.1 1.40 4.9 147 2.8 0.2 0.20 5 9.8 137.2 1.98 9.8 147 2.7 0.3 0.25 5 9.8 132.3 2.42 14.7 147 2.6 0.4 0.29 5 9.8 127.4 2.80 19.6 147 2.5 0.5 0.32 5 9.8 122.5 3.13 24.5 147 2.4 0.6 0.35 5 9.8 117.6 3.43 29.4 147 2.3 0.7 0.38 5 9.8 112.7 3.70 34.3 147 2.2 0.8 0.40 5 9.8 107.8 3.96 39.2 147 2.1 0.9 0.43 5 9.8 102.9 4.20 44.1 147 2 1 0.45 5 9.8 98 4.43 49 147 1.9 1.1 0.47 5 9.8 93.1 4.64 53.9 147 1.8 1.2 0.49 5 9.8 88.2 4.85 58.8 147 1.7 1.3 0.52 5 9.8 83.3 5.05 63.7 147 1.6 1.4 0.53 5 9.8 78.4 5.24 68.6 147 1.5 1.5 0.55 5 9.8 73.5 5.42 73.5 147 1.4 1.6 0.57 5 9.8 68.6 5.60 78.4 147 1.3 1.7 0.59 5 9.8 63.7 5.77 83.3 147 1.2 1.8 0.61 5 9.8 58.8 5.94 88.2 147 1.1 1.9 0.62 5 9.8 53.9 6.10 93.1 147 1 2 0.64 5 9.8 49 6.26 98 147 0.9 2.1 0.65 5 9.8 44.1 6.42 102.9 147 0.8 2.2 0.67 5 9.8 39.2 6.57 107.8 147 0.7 2.3 0.69 5 9.8 34.3 6.71 112.7 147 0.6 2.4 0.70 5 9.8 29.4 6.86 117.6 147 0.5 2.5 0.71 5 9.8 24.5 7.00 122.5 147 0.4 2.6 0.73 5 9.8 19.6 7.14 127.4 147 0.3 2.7 0.74 5 9.8 14.7 7.27 132.3 147 0.2 2.8 0.76 5 9.8 9.8 7.41 137.2 147 0.1 2.9 0.77 5 9.8 4.9 7.54 142.1 147 0 3 0.78 5 9.8 0 7.67 147 147