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Factors which affect stopping distance

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Factors which affect stopping distance Introduction We are investigating the factors that affect the stopping distance of a wooden trolley. We have decided to change the mass of the trolley in this experiment. We will measure the distance that the vehicle takes to stop from when it hits the brake. Equipment Ramp Wooden trolley 4 1kg weights Piece of A4 paper folded to make a brake Light gate Data logger Meter stick Method We set up a ramp so that we could let the trolley roll down onto the brake and we didn't have to push it, which would be unreliable. ...read more.


We let the trolley roll down the ramp onto the brake and measured the stopping distance. We varied the mass by adding the weights one at a time and took three stopping distance measurements for each mass. I recorded the results in a table and put them into a graph. Fair Test To make this experiment a fair test, we will keep these factors the same: the surface of the ramp (so that the friction will be the same each time the trolley rolls down the ramp.) the gradient of the ramp (so that the trolley should go at about the same speed each time.) ...read more.


We will use the average distance from our three results to plot our graph. This means that our results will be more accurate. Prediction I predict that the trolley will have a longer stopping distance when it has a greater mass because the force of gravity pulls it down the ramp. When the mass is greater the force of gravity will be stronger so the break would have to use a greater force to stop the trolley which means that the stopping distance will be longer. stopping distance (cm) mass (g) 1 2 3 average 766 39 31 58 426.67 1766 86.5 75.5 85 823.33 2766 94.5 92.5 98 950 3766 74.5 100.45 97.5 921.67 4766 117.5 111.5 102 1103.33 ...read more.

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