Essay On Wooden Plank

Aim:
To investigate the changes of velocity and to investigate the acceleration and of the car. Also to investigate to see if the velocity and the angle of the wooden plank would make the severity of the crash increase.

Hypothesis:
The higher the slope of the wooden plank, the faster the car will go therefore the increase of the severity of the crash.

Variables:
Independent Variable – The height of the ramp
Dependent Variable – Distance that the dummy flies – the velocity of the car
Constant Variables:
- Size of the car
- Angle of the wooden plank
- Same equipment
- Same direction the car is going every time
- Length of the timber needs to be the same
- Stopper needs to be the same
- Weight of the dummy
- Weight of the car
- Same angle of …show more content…
Clamp the wooden plank to the retort stand and measure from the base of the retort stand to give accurate measurements.
2. Lay out the other wooden plank connecting it to the wooden plank connected to the retort stand.
3. Measure the wooden plank and measure the time it takes for the car to go down the slope.
4. Roll the car down the slope by just letting go starting on 10cm from the base of the retort stand.
5. When the car hits the stopper, the dummy should fly off of the car and measure how far the dummy falls off after the crash.
6. Continue step 4 but change angle of 10cm to 15cm, and then continue to raise the angle by 5cm each time until you reach 30cm.
7. Record all of your times down and then find the velocity the car was going by dividing the distance of the wooden plank and the time that it took to get down the wooden plank. Only the first wooden plank, not the two wooden planks.

Results:
Incline (m) Distance (m) Velocity ms-1
0.010 0.0 (m)
0.0 (m)
0.0 (m) 1m/1.35-1
1m/1.4-1
1m/1.32-1
0.015 0.01 (m)
0.015 (m)
0.012 (m) 1m/0.92-1
1m/0.98-1
1m/0.95-1
0.020 0.028 (m)
0.03 (m)
0.03 (m) 1m/0.65-1
1m/0.69-1
1m/0.68-1
0.025 0.05