034 SC 130 Physical Science test one • Name:

1. ___________________ Identify by the marker shape the slowest moving ball on the graph.
2. ___________________ Determine the speed of the ball depicted by the square markers on the graph. The square markers are the larger, lighter boxes.
3. ___________________ Using the above speed of the square markers ball, how far in centimeters would the ball have rolled after 7 seconds?
4. ___________________ Using the above speed of the square markers ball, how many seconds for the ball to roll 2400 centimeters?
5. ________________ Is a 127 gram rectangular slab of soap that is 9.60 centimeters long, 5.80 centimeters wide, and 2.90 centimeters high Ivory (white) OR Harmony (green) soap?
6. ________________ A RipStik swizzles at a constant rate (travels at a constant speed) covering 45 meters in 36 seconds. Determine the speed of the RipStik.
7. A RipStik accelerates from a speed of 1.6 m/s at 4.0 seconds to a speed of 2.0 m/s at 6.0 seconds. Calculate and write the acceleration of the RipStik in the table.

8. ________________ Where g = 980 cm/s², what is the duration in seconds for a ball to fall from a height of 1960 cm?

9. Write the quadratic equation for the ball path shown on graph.
10. ____________ What will be the height (the y value) for the ball at x = 50 cm?

Equations
[ $\mathrm{BMI}=\frac{m}{h\mathrm{²}}$ ] [ V = lwh ] [ m = ρV ] [ d = ѵt ] [ ѵ = at ] [ d = ½at² ] [ d = ½gt² ] [ $a=\frac{\Delta ѵ}{\Delta t}$ ]
[ $y=-\left(\frac{k}{r^2}\right)x^2+k$ ] [ $\text{percentage error}=\frac{(\text{experimental}-\mathrm{theoretic})}{\mathrm{theoretic}}$ ]