psc3 074 ☈ Name:

  2. __________ _____ A student measures a bar of soap with a length of 5 cm, a width of 3 cm, and a height of 2 cm. The soap has a mass of 36 grams. What is the density of the soap?
  3. ____________________ A student measures the length of a piece of soap using a ruler. Is the measurement a primary or calculated measurement?
  4. density vials ________________ The three identical vials in the image each have a volume of 14.0 cm³. Two of the vials are floating, one sank. Which of the vials has a mass of 13.3 grams, the floating vials or the sinking vial? blogger icon
  5. ___________ _____ A bar of soap is found to have a density of 1.6 g/cm³. If the volume of the soap is 100 cm³, what is the mass of the soap?
  6. ___________ _____ A lead cube is found to have a density of 11.4 g/cm³. If the mass of the cube is 365 grams, what is the volume of the cube??
  7. The second graph shows the time versus distance data gathered for three different RipStik runs A, B, and C. Use the letters at the end of the lines on the xy scattergraph to answer this and the next four questions.

    RipStik time versus velocity background rectangle major grid lines linear C non-linear B parabola A axes text layers RipStik Data time (s) vs distance in (cm) Time (s) Distance (cm) y-axis labels 0 100 200 300 400 500 600 700 800 900 1000 x-axis labels 0 1 2 3 4 5
    _____ Which RipStik is moving at a constant speed, no acceleration?
  8. _____ Which RipStik is moving faster at a constant rate of acceleration?
  9. _____ Which RipStik is moving with a non-constant acceleration?
  10. _____ Which RipStik is displaying an example of Newton's first law?
  11. _____ Which RipStik is experiencing a constant force?
  12. _______ ___________ Determine the speed of RipStik run C.
  13. _______ ___________ Determine the speed of RipStik run B from 0 to 3.5 seconds.
  14. _______ ___________ Determine the speed of RipStik run B from 4.5 to 5 seconds.
  15. _______ ___________ Use the equation d = ½at² and the coordinate (3 seconds, 900 centimeters) to calculate the acceleration a of RipStik run A.
  16. __________ ______ Given d = ½gt², where g = 980 cm/s², what is the duration in seconds for a marble to fall from a height of 7840 cm?
  17. A tennis ball is thrown in an arc in front of a white board. The ball obeys the equation y = − ( 50 252 ) x2 + 50 Sketch the arc of the ball on the white board on the graph below.
    Rolling ball background rectangle major grid lines axes x-axis and y-axis text layers Falling super ball x (cm) y (cm) y-axis labels 0 5 10 15 20 25 30 35 40 45 50 x-axis labels -25 -20 -15 -10 -5 0 5 10 15 20 25
  18. ____________________ A marble with a mass of 5 grams rolls 30 centimeters in 0.60 seconds. Calculate the momentum of the marble.
  19. ____________________ Calculate the gravitational potential energy relative to the floor for a 30 kilogram child standing on a table one meter high. Use 9.8 m/s² for the acceleration of gravity g.
  20. ____________________ Calculate the kinetic energy for a 30 kilogram child traveling at a velocity of 0.7 m/s on a RipStik.
  21. ____________________ A marble is rolled from a height h of 20 cm on a banana leaf marble ramp. Use the theoretic equation ѵ=44.2h   to calculate the velocity of the marble at the bottom of the ramp.
  22. Data was gathered for a pulley system with six lines holding up the load. Mechanical advantage of a pulley system background rectangle major grid lines axes line and data points as circles text layers: x-axis label, y-axis label, x axis values, y-axis values Pulley system Force (gmf) Load (gmf) x-axis labels 0 50 100 150 200 250 300 350 400 450 500 y-axis labels 0 100 200 300 400 500 600 700 800 900 1000

    __________ Using the pulley system graph, what the actual mechanical advantage for the pulley system?
  23. _______ What is the ideal mechanical advantage for a pulley system with six load lines?
  24. _______ Based on the above two questions, what is the efficiency of the pulley system?
  25. _____________ A RipStick was accelerated from a velocity of 0 m/s to 1.5 m/s in three seconds by a 52 year old instructor with a mass of 63 kilograms. Calculate the force that generated the acceleration.
  26. Temperatures
  27. ______________ When walking due North, which number would change on the GPS unit, the N 06° 54.540' or the E 158° 09.650' number?
  28. _________ _____ The classroom is at E 158° 09.651'. I was was at E 158° 09.381'. Use a value of 1842 meters per minute to calculate the distance from the classroom to me.
  29. ______________ If you are at E 158° 09.657' and walk to E 158° 09.474', which direction did you walk: north, south, east, or west?
  30. _________ _________ Faunaleen walked from E 158° 09.657' to E 158° 09.474'. How far did Faunaleen walk in minutes?
  31. _________ _________ While walking from E 158° 09.657' to E 158° 09.474' Joyceleen measured a distance of 348 meters. Calculate the number of meters per minute.

slope m= (y2−y1) (x2−x1)
Volume V = length l × width w × height h
mass m = density ρ × Volume V
ρ= m V
distance d = velocity ѵ × time t
ѵ= Δd Δt
a= Δѵ Δt
ѵ = at
d = ½at²
d = ½gt²
where g is the acceleration of gravity.
g = 980 cm/s² (cgs)
g = 9.8 m/s² (mks)
Gravitational Potential Energy = mgh
Kinetic Energy = ½mѵ²
momentum p = mѵ Force = Δmomentum
Force = mass × Δѵ Δt
Force = mass × acceleration
efficiency= actual mechanical advantage ideal mechanical advantage