• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5
6. 6
6
7. 7
7

# To Investigate a Single Factor that Affects the Speed of an Object at the End of a Runway

Extracts from this document...

Introduction

Charlotte Bell 11A

To Investigate a Single Factor that Affects the Speed of an Object at the End of a Runway

### Introduction

As part of the physics GCSE coursework I have been asked to investigate a single factor that affects the speed of an object at the end of a runway. To do this I will measure how long it takes for trolley, ping-pong ball or marble to travel a set distance down a runway, which will be raised to different heights, which will be the variable.

Aim:

To investigate a single factor that affects the speed of an object at the end of a runway.

### Prediction

I predict that the greater the height of the ramp the faster the speed of the object will be at the end of the ramp. Scientific knowledge tell us that this is because at the top of the ramp the ball or trolley has greater gravitational potential energy (gravitational potential energy is stored energy that can be converted into a different energy or “given out” if the object falls down), which is then converted to kinetic energy when the object starts to move. This is because energy cannot be used up or lost, it can only be converted into different energy.

Middle

0.48

0.96

2.10

0.20

2.77

2.74

2.80

2.77

0.76

1.52

2.10

0.30

2.25

2.48

2.56

2.43

0.86

1.73

2.10

0.40

2.17

1.02

1.02

1.75

1.20

2.40

2.10

0.50

1.73

1.66

1.69

1.69

1.24

2.49

2.10

Marble

Time in seconds it took the object to

travel down the ramp

 Height (m) 1st Test (secs) 2nd Test (secs) 3rd test (secs) Average Time (secs) Average Speed (m/s) Final Speed (m/s) Length of runway (m) 0.10 3.63 3.74 3.67 3.68 0.57 1.14 2.10 0.20 2.38 2.43 2.42 2.41 0.87 1.74 2.10 0.30 1.90 2.15 1.99 2.01 1.04 2.09 2.10 0.40 1.50 1.65 1.61 1.59 1.32 2.64 2.10 0.50 1.49 1.47 1.28 1.41 1.49 2.98 2.10

Using these preliminary results, we decided that we would use the object with the greater range of results, which was the ping pong ball.

### Apparatus

Ramp,

Ping pong Ball,

Metre rule,

Stop clock,

Way of raising the ramp, i.e. books.

Reasons for using these Apparatus:

Stop clock: we decided to use a digital stop clock, as it would be more accurate than an analogue one, as the readings would be digital.

Metre Rule: Using a metre rule to measure the length of the ramp was more accurate than using, for example and 15cm ruler, as you could measure greater distances at a time instead of moving the ruler.

Step-by-Step

1. Using the preliminary results, decide which object is going to be used to travel down the ramp (Ping-Pong ball in this case)
2. Set the ramp up to the first height (0.10m) using a stool and some books if necessary
3. Use black tape to mark off 2.10m on the ramp.

Conclusion

Another possible investigation using different apparatus:

Apparatus:

Ramp,

Light sensor attached to a computer,

Object to travel down the runway (ping pong ball, trolley, marble)

A way to raise the ramp.

### Step-by-Step

1. Set the apparatus up as shown in the diagram
2. Start the object at the first sensor
3. The computer will record the data from the object travelling down the ramp, and then the experiment should be repeated two more times to try and ensure that an anomaly will not occur, then repeat for the other heights, 0.20m, 0.30m, 0.40m, 0.50m.

You could also use something that would release the ball, to ensure that there is no human error, e.g. if the human accidentally pushed the ball a bit down the ramp, this would make the results unreliable.

### Reliability

I believe that this experiment is reliable as all that was possible was done to ensure that anomalies would not occur. We can also assume the experiment is reliable as the results correspond with the prediction.

Other than these possible reasons I can conclude that the experiment was conducted as fairly and accurately as possible with the equipment and conditions that we were operating in and that the results and the data collected are as accurate as possible, however there are ways in which the experiment could have been improved, as shown above.

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

# Related GCSE Forces and Motion essays

1. ## I aim to find out if the mass of an object affects the speed ...

3 star(s)

I then tried throwing the container through. This again gave the same result. This was because the light gate could not measure faster than 2.59m/s with an object of 3cm. I then lowered my height to 30cm. The speed was lower than 2.59m/s, so I used this height.

2. ## Investigate how the weight of an object affects the force required to overcome friction.

X * 100 X % ERROR = 0.08 * 100 2.78 % ERROR = 2.88 % (3s.f) Point 5: % ERROR = ? X * 100 X % ERROR = 0.06 * 100 4.34 % ERROR = 1.38 % (3s.f)

1. ## The experiment consisted of recording the results of a small toy car being allowed ...

graph appears to decrease all the time, and it is even more obvious on the acceleration time graph where the car's acceleration can be seen to be decreasing throughout its journey. Motion while the Car is in Freefall This is where the analysis of the graphs and tables becomes more complicated.

2. ## In this experiment I aim to find out how the force and mass affect ...

The main problem we found in our experiment was that the trolley kept swaying to the sides, creating a longer journey and most of the time hitting the edge. This wasted a lot of time as we had to conduct the result again.

1. ## Trolley Speed

In this experiment I am going to focus on translational kinetic energy (from here on, the phase kinetic energy will be referred to as translational kinetic energy.) The kinetic energy of an object depends upon two variables: the mass (m) of the object and the speed (v) of the object.

2. ## Investigate and measure the speed of a ball rolling down a ramp.

So I think I'm going to use building blocks that are 8.2cm in height each and that would cancel out the chance of any change in the height due to compression. When thinking about time, the most accurate stopwatch we can get would be a 2 d.p.

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

This is expressed as the formula 1/2MV2 = FxD. This is an accurate way of measuring ho much energy is lost, which I predict to happen. The energy lost will be turned into heat energy at points where there is a lot of friction and maybe into sound.

2. ## Investigate a factor that might affect the size of a crater made by a ...

Results Table Height (m) Depth of crater (cm and mm) 1st Test 2nd Test 3rd Test Average 0.5 2.2 1.8 2.1 2.0 1 2.4 2.6 2.8 2.6 1.5 3.4 3.5 3.6 3.5 2 4.5 4.3 4.6 4.5 2.5 4.9 5.2 5.0 5.0 Analysis Both graphs have strong, positive correlation showing

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