Proving Newtons Second Law

Car Weight: 101.1

Question: 

What is the relationship between Force, Mass, and Acceleration? 

Materials Used:

Plastic Car
Weights
2 spring scales 
Wooden Track 
Scale 

Hypothesis:

Will  the force , mass, and acceleration be close in results. 
The higher the angle the heavier the weights.  

Procedure:

1. Got Supplies
2. I then put the car on a wooden ramp (flat)
3. pulled the car across the flat ramp 
4. Then I repeated this 5 times with different angles of the ramp and different weights
First was 100 g 
Then 200 g
Then 50 g
Then 500 g 
Then 1000 g
Lastly 200 g again
5. i then graphed the data of the degrees of the ramp, the weight of the car and acceleration, and force of the pull from the spring scale. 
6. Then after the experiment i created two graphs showing 
acceleration vs. angel and Acceleration vs. Mass