psf3 044054064 ☈ Name:

  1. A student rolled marbles into a line of five marbles.
    Marbles on ruler track
    1. _________ If one marble collides with a line of five marbles on a ruler track, how many marbles are ejected (go out)?
    2. _________ If two marbles collide with a line of five marbles on a ruler track, how many marbles are ejected (go out)?
    3. ___________________ If one marble moving very fast collides with a line of five marbles on a ruler track, what is the speed of the ejected marble(s)?
  2. Write Newton's first law of motion.
  3. Write Newton's second law of motion.
  4. Write Newton's third law of motion.
  5. The graph shows pulley data gathered by a student in physical science.
    1. Plot the data provided in the table on the graph below and draw a line through the points.
      Graphical analysis

      Pulleys

      Force(gmf)Load (gmf)
      00
      2070
      40140
      60210
      80280
      100350
      background rectangle major grid lines axes text layers Pulley data force (gmf) load (gmf) y-axis labels 0 40 80 120 160 200 240 280 320 360 400 x-axis labels 0 20 40 60 80 100
    2. ____________ Based on the data, what is the Actual Mechanical Advantage for the pulley system?
    3. ____________ The pulley system had four load lines. What is the Ideal Mechanical Advantage?
    4. ____________ Use the preceding two questions to calculate the efficiency of the pulley system.
    5. ______________ What was the likely cause of the efficiency being less than 100%?
  6. Temperatures in Celsius:
  7. Explain the difference between heat and temperature.
  8. Explain the following types of heat movement:
  9. Mathematical models Mathematical models on the half shell background rectangle major grid lines axes x-axis and y-axis a square root path a quadratic path a rational function with asymptote data points as circles linear regression line data points as rectangles data points as diamonds text layers Mathematical relationships x-axis labels A B C D
    1. _____ Identify by the letter which of the mathematical relationships on the graph represents the time versus distance relationship for a RipStik moving at a constant linear velocity with no acceleration (as in the homework 021 in the second week).
    2. _____ Identify by the letter which of the mathematical relationships on the graph represents the time versus distance relationship for a ball falling under the constant acceleration of gravity g (as in laboratory three).
    3. _____ Identify by the letter which of the mathematical relationships on the graph represents the height versus velocity relationship for a marble rolling from a height h down a banana leaf and onto a flat table (homework 041).
    4. _____ Identify by the letter which of the mathematical relationships on the graph represents the length versus mass for a cantilever arm balance.

slope= ( y2 − y1 ) ( x2 − x1 )
percent error= (experimental value−expected value) (expected value)
Gravitational Potential Energy GPE = mgh
acceleration of gravity g = 979 cm/s²
Kinetic Energy KE = ½mѵ²
momentum = mass m × velocity ѵ
Force F = mass m × acceleration a
efficiency= Actual Mechanical Advantage Ideal Mechanical Advantage