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  • Level: GCSE
  • Subject: Maths
  • Word count: 1269

The aim of this experiment is to see how the height of a ramp affects the average speed of a truck on a run off distance.

Extracts from this document...

Introduction

For my coursework I have got to see how height affects the average speed of a truck. I will be concentrating on a run off distance which will be timed,  me and my class will do 1 experiment between us so we can have more accurate results.  

Aim:  the aim of this experiment is to see how the height of a ramp affects the average speed of a truck on a run off distance.  

Prediction: I predict that as the height of the ramp increases the average speed of the trolley over the run off distance will increase.  I can explain this scientifically, the gravitational potential energy will increase as the height of the ramp increases, also has the gravitational potential energy increases so does the Kinetic energy. As the trolley moves down the ramp the gravitational potential energy decreases and the kinetic energy increases, I can show this in a diagram:

Gravitational potential energy at the top of the ramp will equal the kinetic energy at the bottom.

MGH = ½ MV²

...read more.

Middle

We took a ruler and measured 0.01 on are ramp stand, than we took a long piece of wood which we used for a ramp.  We used the same person to measure the heights each time, the same person to use the stop clock and also the same person to send the trolley down the ramp.  We did each experiment five times and worked out the average.  I also chosen the
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Conclusion

The main source of error in my experiment is human reaction; this is not a huge problem as I can not control this.  We also had a few other errors that we also cannot control, these are:

  • Measurements of time is only to two decimal places
  • The trolley also sometimes did not go straight down the ramp
  • The high was only as accurate as the people who measured (human error)  
  • Also the timing is also as accurate as the person who measured the time on the stop watch.  

A suggestion of how to improve the experiment is light gates, her is a diagram:

This will make the experiment more accurate

Example: 3.32, 3.33, 3.32, 3.34.

Also with the computer taking the measurements it will be more accurate by producing more decimal places for a more accurate average speed.  Also this way there is no human error.  This is the main source of error.  

...read more.

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