024 q02 sc130 • Name:

1. The graph shows the time versus distance data gathered for four different balls in laboratory 022. The first four questions are matching. Use the letters A, B, C, and D at the end of the lines on the xy scattergraph.
   1. _____ Ball not moving: stationary.
   2. _____ Ball slowing down.
   3. _____ Ball moving at a constant non-zero speed.
   4. _____ Ball speeding up.
   5. ___________________ Determine the speed of ball D.
   6. ___________________ Determine the speed of ball B.
   7. ___________________ Determine the speed of ball A between 0 and 2 seconds.
   8. ___________________ Determine the speed of ball C between 7 and 10 seconds.
2. A rolling ball cannot generate a vertical line on a time versus distance graph. Why?
3. 
   __________ _________ The graph above was generated when I rode the RipStik on Monday. The x-axis is time in seconds, the y-axis is the distance in meters. The equation of the line is y = 200x + 20. What is the velocity of the RipStik (including units)?
4. _________ __________ If I kept on riding the RipStik at the above velocity for 180 seconds, use the given equation to determine how far I would go.
5. _________ __________ Palikir Elementary School is 100,000 centimeters away. If I rode to Palikir Elementary at the same velocity as I had on Monday, how long in seconds would that RipStik ride take?
6. As seen in the image, three vials with the same volume have equal amounts of a green liquid. Based on what you learned from the soap and the density laboratory, how would you explain that two are floating while one has sunk to the bottom?
   

$\text{slope m}=\frac{(\mathrm{y2}-\mathrm{y1})}{(\mathrm{x2}-\mathrm{x1})}$ mass m = (density ρ)×(Volume V) ] V = lwh d = ѵt $ѵ=\frac{\Delta d}{\Delta t}$ [ $a=\frac{\Delta ѵ}{\Delta t}$ ] [ ѵ = at ] [ d = ½at² ] [ d = ½gt² ]