Introduction: Most car crashes occurred between a collision of a moving car and a stationary object. Of these, over (intro not finished)
Aim:
The aim of this experiment was to manipulate the process of how a passenger suffer from an impact due to a car crash, investigate and try to control the forces on drivers and to develop solutions that would reduce injuries in car crashes.
Hypothesis:
If the height from where the playdough is dropped increased then the height of the play dough decreased and the flat area increased.
Materials:
The materials required for the experiment were:
150g of playdough (represents a moving passenger)
2x1m rulers
2x30cm or smaller rulers
Paper towel
Watchglass with small amount of water on it
An electric balance
Method:
1. The correct equipments were collected
2. 2 equal portions of playdough were weighted (75g)
3. The portions were then rolled into balls
4. A piece of paper towel was placed onto the ground
5. The balls were carefully placed on the bench
6. 2 smaller rulers were used to measure the heights of the balls by one being put on the ball to find the top and the other was used to measure the height
7. The measurements were recorded
8. A 1m ruler was used to measure 50m from the ground
9. Depend on the ball, the first ball was carefully wet by being rolled on the watchglass
10. The ball was aligned above the paper and was then dropped
11. The smaller rullers were used to measure the height of the ball
12. The ball was carefully lifted off and the flat area was measured by measuring the wet spot created by the ball
13. The measurements were recorded
14. The ball was then reshaped for the next try
15. Steps 8 to 14 were repeated 2 times
16. Steps 4 to 15 were repeated with different heights of 100cm, 150cm and 200cm
Results:
Ball
Measured Damage
Height of ball dropped from
50cm
100cm
150cm
200cm
1
Mass of ball 1(g)
75
75
75
75
Height of ball BEFORE (cm)
4.5
4.5
4.5
4.5
Height of ball AFTER (cm)
4.1
4
3.7
3.2
Splat area (cm2)
12.57
19.63
19.63
18.86
2
Mass of ball 2 (g)
75
75
75
75
Height of ball BEFORE (cm)
4.5
4.5
4.5
4.5
Height of ball AFTER (cm)
4.2
4
3.7
3.3
Splat area (cm2)
15.9
23
19.35
19.63
3
Mass of ball 3 (g)
75
75
75
75
Height of ball BEFORE (cm)
4.5
4.5
4.5
4.5
Height of ball AFTER (cm)
4.3
3.9
3.6
3.2
Splat area (cm2)
13.2
17.3
18.86
16.63
Average in Flat Areas (cm2)
3.13
19.98
19.28
18.37
Average in Heights (cm)
4.2
3.97
3.67
3.23
Discussion: (missing a small intro) If the height from where the playdough is dropped increased then the height of the play dough decreased and the flat area increased.
The results for the experiment:
Ball
Measured Damage
Height of ball dropped from
50cm
100cm
150cm
200cm
1
Mass of ball 1(g)
75
75
75
75
Height of ball BEFORE (cm)
4.5
4.5
4.5
4.5
Height of ball AFTER (cm)
4.1
4
3.7
3.2
Splat area (cm2)
12.57
19.63
19.63
18.86
2
Mass of ball 2 (g)
75
75
75
75
Height of ball BEFORE (cm)
4.5
4.5
4.5
4.5
Height of ball AFTER (cm)
4.2
4
3.7
3.3
Splat area (cm2)
15.9
23
19.35
19.63
3
Mass of ball 3 (g)
75
75
75
75
Height of ball BEFORE (cm)
4.5
4.5
4.5
4.5
Height of ball AFTER (cm)
4.3
3.9
3.6
3.2
Splat area (cm2)
13.2
17.3
18.86
16.63
Average in Flat Areas (cm2)
13.89
19.98
19.28
18.37
Average in Heights (cm)
4.2
3.97
3.67
3.23
The results that are highlighted above were not correct to the hypothesis, the velocity were increasing while the “highlighted” flat areas were also increasing. The reason for the errors was there was not enough times of trials in the experiment.In the experiment, the method was only determined to be repeated 3 times. And by having a lack of trials the data collected was not enough to support the hypothesis.
Another reason for the
