ball down ramp

Your work on ball down ramp has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.

Your general comment

Will a steeper ramp give greater or lesser time?

I think the length of time it takes the ball to roll down the ramp will be the least when the ramp is at its steepest.

As slopes increases will time intervals increase, decrease or show no pattern?

Since the ball will be rolling downhill, the slope of the ramp is negative. The steeper ramps will have the smallest slope.

The intervals will be increasing as the slopes do (and steepness decreases).

Your report of 5 trials each way for 1 domino

1.563

1.5

1.594

1.743

1.547

1.766

1.828

1.984

2.047

1.860

I perform a function similar to this at work, starting an injector and CT scanner simultaneously - one with each hand. I was thinking about keeping it as accurate as possible.

When I switched from one side to the other, I made sure the position of the ramp did not change. I remembered how far from level most of my floors are, and hoped it would not affect the results. I think it did, though.

Your report of 5 trials each way for 2 dominoes

1.141

1.250

1.203

1.360

1.156

1.313

1.406

1.453

1.313

1.406

Your report of 5 trials each way for 3 dominoes

1.188

0.922

1.063

1.078

1.156

1.203

1.109

1.078

Do your results support or fail to support your hypothesis about increasing or decreasing times?

My results do not fail to support the hypotheses I stated in the first two questions.

As the slope decreases(and steepness increases), the interval decreases.

How do you think ave velocity is related to slope?

The average velocity of the ball is inversely inversely proportional to the slope in this case.

Since the interval is decreasing while the distance stays the same, the average velocity must be increasing.

Speculate on why ave velocity changes with slope.

As the slope decreases (steepness increases), the height of the ball above the end of the ramp is increased. I think the potential energy of the ball is increased with additional height above the end point.

How could you test your speculations?

Could I measure the distance that the starting point was above the ending point and use the acceleration due to gravity?

I've typed three different guesses, and this is the one I think comes closest