• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Identify the factors affecting the braking distance of a toy car.

Extracts from this document...

Introduction

Oliver Heywood        Physics Coursework        02/05/2007

Planning the Investigation

Aim:

My aim through this experiment is to identify the factors affecting the braking distance of a toy car; the factor I am investigating is Speed. The reason I choose speed to investigate was because I thought of all the possible outcomes and worked out that the mass would only be able to go up to no more than five masses on the car as there would not be enough carpet as a breaking area without falling off the table. So from the results I can plot graphs of Speed and Breaking Distance against the mass of the car. I am investigating the speed variable and looking at the breaking distance.  

Method:

To begin with a car which is 2.5 inches long and weighs 52.2g is placed at a height on the plastic runway. The car runs down the track and onto a piece of carpet. I then take the results that come up on the computer screen, which is the speed, measured in m/s. These results are recorded by a light gate sensor; the car travels down the runway and intercepts the beam of the light gate.

...read more.

Middle

2nd Speed (m/s)

Average Speed (m/s)

Braking Distance (cm)

2nd Braking Distance (cm)

Average Braking Distance (cm)

2.22

2.27

2.24

100

102.8

101

2.06

2.11

2.09

94

92

93

1.93

2.00

1.97

87.1

88

88

1.87

1.90

1.89

83

82.5

83

1.75

1.76

1.76

75

74.6

75

1.73

1.73

1.73

69.8

70

70

1.68

1.66

1.67

65

63

64

1.55

1.54

1.55

58

60

59

1.43

1.42

1.43

54

53.3

54

1.36

1.38

1.37

48.5

49

49

1.18

1.17

1.18

44

41.9

43

1.11

1.10

1.11

38

36

37

0.94

0.94

0.94

26.4

27.8

27

0.75

0.76

0.76

20.1

19

20

0.67

0.67

0.67

15

13

14

0.59

0.57

0.58

10

9

10

...read more.

Conclusion

I would do each experiment many more times so when averaged it would get rid of the anomalous results.

Evaluation

My predictions were close but not close enough as there were around 6 anomalous results. I can’t make a complete conclusion, to do this I would have to redo the experiment making use of the alterations recommended in the conclusion.Also I would need a generally more controlled environment; I could use a real car and use a different material of a runway. I would also look at all the possible variables including the mass. This would be great as I could plot graphs against each other making a fair test having a lot more data.

In my preliminary experiment I have only taken ten results, because it is a plan and I have only looked at one affecting factor the speed. In the real investigation I will take a total of 32 results. I will obtain 2 results for each experiment and can then get an answer by averaging both results.

There were some results that were correct to my prediction. Most of them can be explained. In the graph of speed against distance, there is obviously good results at the beginning, but then as the bottom of the ramp gets steeper, it starts to affect the distance greatly.

...read more.

This student written piece of work is one of many that can be found in our GCSE Forces and Motion section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Forces and Motion essays

  1. Marked by a teacher

    Physics Investigation: The effect of speed on braking distance

    4 star(s)

    as I will need to slow the ball down as it travels down the ramp. Method There are numerous methods to measure the speed of the ball as it travels from the ramp and onto the carpet. These are the two methods that I have used during the Preliminary in order to test out which is better, and why.

  2. Marked by a teacher

    Stopping distances of toy cars travelling down a ramp

    3 star(s)

    I would use low friction wheels on a rail which would limit the effect that friction has on my results. The surface I would use would be a no friction surface to limit friction so more.

  1. How the height of a ramp affects the speed of a toy car.

    method: 1) Collect your equipment and set up as shown in the diagram. Measure the angle and make sure it is 20�. 2) Let go of the car and start the stopwatch. Time how long it takes for the car to hit the box at the bottom of the ramp.

  2. Investigating the speed of a toy car travelling down a ramp

    tends to suggest I have a very weak, negative correlation as the trendline slopes downwards.

  1. Investigation is to see how changing the height of a ramp affects the stopping ...

    investigation is to see how changing the height of a ramp affects the stopping distance of a toy car. APPARATUS > Metre Ruler > Toy Car > Boss and Clamp > Stand > Ruler to measure height of ramp where toy car will be released > Ramp > Light Gate

  2. Factors Affecting the Speed of a Car after Freewheeling down a Slope

    of the object. One Newton is the force that gives a mass of 1Kg an acceleration of 1meter/sec2. 1N=1Kgm/sec2 A moving object keeps moving due to a force called Kinetic Energy. Energy can neither be created nor destroyed (Law of Conservation of energy).

  1. Investigating the relationship between the speed of a model car and its stopping distance.

    amount of friction acting on the desk each time as every car would have different amounts of friction acting on it as it moves. * Work Surface / Desk, (this is varnished wood, with dents and holes in its surface) * Light Gate, * Electronic Timer * Ramp, * Blocks.

  2. An investigation into factors that effect the braking distance of a trolley

    I predict that as I increase the height of the slope (or the angle between the floor and the ramp), the acceleration will increase, due to a more direct force from gravity caused by less friction on a steeper slope.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work