SC 130 Physical Science Test One • Name:
- ________________ What is your mass in kilograms?
- ________________ What is your height in meters?
- ________________ A 100 gram box of Harmony soap is 9.3 centimeters long, 6.4 centimeters wide, and 2.9 centimeters high. What is the volume of the bar of soap in cubic centimeters?
- ________________ A 100 gram box of Harmony soap is 9.3 centimeters long, 6.4 centimeters wide, and 2.9 centimeters high. What is the density of the bar of soap in grams per cubic centimeter?
- ________________ On a Monday evening in January I ran for 28 minutes and 45 seconds, covering 4.83 kilometers in the pouring rain. What was my speed in meters per second?
| Time (s) | avg ball dist (m) |
|---|
| 0 | 0.00 |
| 1 | 3.31 |
| 2 | 5.70 |
| 3 | 7.78 |
| 4 | 9.61 |
| 5 | 11.22 |
| 6 | ________
(see number eight below) |
- ___________________ What is the speed of the ball between 3 and 4 seconds in meters per second?
- ___________________ What is the speed of the ball between 4 and 5 seconds in meters per second?
- ___________________ If the ball keeps rolling at the speed calculated between 4 and 5 seconds, how far will the ball have traveled after six seconds?
- ___________________ Using the two speeds above in questions six and seven, what is the acceleration of the ball?
- ___________________ Is the ball speeding up or slowing down?
- Why is the ball speeding up or slowing down?
- ___________________ The above graph shows the path of a ball being thrown as was done on Wednesday, 30 January. What is the name of the shape of the path of the ball?
- ___________________ What causes the ball to fall back towards the ground?
- k = _________ r = __________ Toughie:
Given the projectile path above and the equation
determine the values of k (the y-intercept) and r ( the distance from the axis of symmetry to the x-intercepts).
| Drop times | x | y |
|---|
| Drop 1 | Drop 2 | Drop 3 | Drop 4 | Drop 5 |
Mean drop time (s) | height (cm) |
| 0.64 | 0.62 | 0.34 | 0.67 | 0.62 | 0.58 | 200 |
- ___________________ Looking at the above measurements from a ball dropping laboratory such as the one yesterday, which of the drop time measurements appears to in error?
- Why did you pick that drop time and say that it is in error?
- ___________________ After removing the drop time that appears to be in error, what is the new average drop time based on the remaining four measurements?
Physci spring 2008 •
Physci •
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