074 t2 mx sc130 • Name:

1. The graph shows the time versus distance data gathered for three different RipStik runs A, B, and C. The first three questions are matching. Use the letters at the end of the lines on the xy scattergraph.
   
   _____ RipStik moving at a constant speed, no acceleration.
2. _____ RipStik moving faster at a constant rate of acceleration.
3. _____ RipStik moving with a non-constant acceleration .
4. _______ ___________ Determine the speed of RipStik run C.
5. _______ ___________ Determine the speed of RipStik run B from 0 to 3.5 seconds.
6. _______ ___________ Determine the speed of RipStik run B from 4.5 to 5 seconds.
7. _______ ___________ A student measures a bar of soap with a length of 7.7 cm, a width of 5.0 cm, and a height of 2.2 cm. The soap has a mass of 72 grams. What is the density of the soap?
8. ______________ Will the soap above float or sink?
9. _______ ___________ Calculate the velocity of a RipStik that travels 42 meters in 12 seconds.
10. _______ ___________ At the RipStik velocity calculated above, how long in seconds for the RipStik to cover 2100 meters?
11. ______ _____________ The equation on a graph of a moving RipStik with time in seconds on the x-axis and distance in meters on the y-axis is y = 1.80x. What is the speed of the RipStik?

12. RipStik Acceleration Data
    pillar	time (s)	dist (m)
    zero	0	0
    one	8	5
    two	12	10
    three	10	15
    four	11	20

    _______ ___________ Calculate the speed of the RipStik between the pillars three and four.
13. _______ ___________ Using the starting speed of 0 m/s at pillar zero, the above speed between pillar three and four, and the time of 11 seconds, determine the acceleration of the RipStik.
14. What does Newton's first law say that an object in motion will tend to do?
15. A ball is thrown along an arc as seen in the diagram. The vertex is at (0, 100), the roots are at (-50,0) and (50, 0).
    
    __________ ________ Use the values in the diagram and the equation $y=-\left(\frac{k}{r^2}\right)x^2+k$ to determine the height of the ball at x = 40 centimeters.
16. __________ ______ Where g = 980 cm/s², what is the duration in seconds for a marble to fall from a height of 1960 cm?
17. If a moving object is losing momentum as time passes, then what does Newton's second law tells us is acting on the object?
18. __________________________ Suppose a single 5.0 gram marble hits a line of five marbles that each have a mass of 2.5 grams. As shown in class, two marbles are kicked out. One of the kicked out marbles moves slightly faster than the other kicked out marble. In this situation, what is being conserved?
19. _________ _________ Given that the force is equal to the change in momentum, calculate the force required to bring a marble with a momentum p of 210 g cm/s to a stop in 0.5 seconds.
20. _________ _________ When all 67 kilograms of me falls off a RipStik, I accelerate towards the ground at 9.78557 m/s² and then I hit the ground, exerting a force of 1500 Newtons on the ground. Calculate the counter-force that the ground exerts on me.

21. Extension x (cm)	Force (gmf)
    0	0
    3	15
    6	30
    9	45

    _______ Data was gathered for the extension of an elastic band using a cup and marbles to generate the force. The data in the table is from the experiment. Is the elastic band a linear elastic material?
22. _________ _________ For the data above, determine Hooke's constant for the elastic band using Hooke's law [ Force = k ∙ x ].
23. _________ _________ If a force of 50 gmf is applied to the above elastic band, calculate the extension x.
24. _________°C What is the temperature of a mix of melting ice and water in Celsius?
25. _________°C What is the temperature of melting solid coconut oil in Celsius?
26. _________°C What is the typical daily air temperature in Pohnpei in Celsius?
27. _________°C What is the temperature of the healthy living human body in Celsius?
28. _________°C What is the temperature of a boiling water in Celsius?
29. ______________ If you are at N 06° 54.560', E 158° 09.352' and start walking due West, which number would change on the GPS unit, the N 06° 54.560' or the E 158° 09.352' number?
30. _________ _________ A student walked north on a line of longitude starting at N 6° 54.484' and ending at N 6° 54.594'. The student measured a distance of 231 meters. Determine the number of meters per minute of latitude based on this data.
31. _________ _________ On Wednesday the 28th I hid just South of the gymnasium. The Garmin GPS units used by the class indicated that I was located at N 06° 54.560', E 158° 09.352'. The GPS in my camera is not as accurate and indicated that my location was N 06° 54.533', E 158° 09.333'. What is the difference in minutes between N 06° 54.560' and N 06° 54.533'?
32. _________ _________ Based on laboratory seven experimental data average from both sections, there are 2100 meters per minute. Given that there are 2100 meters per minute, what is the distance in meters for the difference in minutes calculated in the question above? In other words, how far apart in meters are the camera coordinates from the Garmin GPS coordinates?

$\text{slope m}=\frac{(\mathrm{y2}-\mathrm{y1})}{(\mathrm{x2}-\mathrm{x1})}$
mass m = (density ρ)×(Vol V )
Vol = length×width×height
$ѵ=\frac{\Delta d}{\Delta t}$
d = ѵt
$a=\frac{\Delta ѵ}{\Delta t}$
ѵ = at
d = ½at²
d = ½gt²
p = mѵ
GPE = mgh
KE = ½mѵ²
$F=\frac{\Delta p}{\Delta t}$
F = ma
F = −kx