how would the results change if the angle of the ramp were to change? (2 points) 2. should the experiment be done at multiple angles? why or why not? (2 points) 3. which angle produces the most reliable results? why? (2 points) 4. do the wheels have an impact on the experimental results? could the experiment work better with large wheels or small wheels? (2 points) 5. does the mass of the cart affect the experimental results? which mass cart would produce the most reliable results? (2 points) 6. for each of the following four locations of the cart