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1. In your judgment, did the marble roll with a constant speed? Explain. 2. Did

ID: 1423965 • Letter: 1

Question

1. In your judgment, did the marble roll with a constant speed? Explain.

2. Did it roll with a constant acceleration? Explain.

For both questions, support your conclusions by giving both data and interpretations of what each of the two graphs shows. Take experimental error into consideration: there's no reason to expect that any (let alone every) data point will fall on a best-fit line when you're graphing real data.

DUI A HA L. | Table 4.2: Motion data for rolling marble otal length of ramp: 1 meter Height of ramps upper end: 82.23 cm Angle above horizontal: 4.675 degrees X (m ) 03 4 5 6 7.1 Trial 1its | 0.00 1.35 T 1.65 T 1.98 T 2.31 T T 2.92 ,17334 I 2.65 3 Trial 2 :t(s) 0.00 132 1.67201 2.32 T 2.73 2.93 T 3.17 T 3.37 | Trial 3: t(s) 0.00 1.37 1.69 197 2.29 2.64 2.91 3.18 3.32 | AVG t(9) 0.00 1.35 1.67 199 2.31 2.64 2.92 3.17334 v (mis0.00 T..52.53.55 T.57 T.6 T ) 44TARTH he 6 0.00 188279 3.96534696853 10.05 11.16 a Angle above horizontal calculation: (Risen)85.32cm-(Initial height)77.17cm= 8.15cm Sin(theta) 8.15cm/100cm: sin21, -(.0815cm)- 4.675 degrees Acceleration from v vs. tgraph : a, =.0699x+0.3544 Acceleration from x vs. h r graph a, =.0717x+0.1949 Error

Explanation / Answer

1. No beacuse from the first graph, it is clear that speed is increasing with time.

2.Yes, it rolled with constant acceleration, as it is clear from constant slope in case of both the graphs.