044 SC 130 Physical science • Name:

  1. A marble with a mass of 5 grams sits on a banana leaf 10 centimeters vertically above the table. The acceleration of gravity g of 980 cm/s².
    1. _________ __________ Calculate the Gravitational Potential Energy of the marble.
    2. _________ __________ At the bottom of the banana leaf the same marble is moving at a velocity of 100 cm/s. Calculate the Kinetic Energy of the marble.
    3. ______________ As a percentage of the original Gravitational Potential Energy, how much energy was lost to friction and other sources of energy loss?
  2. 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 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
    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.
    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.
    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.
  3. The graph shows momentum data gathered by a student in physcial science.
    1. Plot the data provided in the table on the graph below and draw a line through the points.
      Graphical analysis

      Data

      momentum in (g cm/s)momentum out (g cm/s)
      00
      200160
      400320
      600480
      800640
      1000800
      background rectangle major grid lines axes text layers Conservation of Momentum momentum in (g cm/s) momentum out (g cm/s) y-axis labels 0 100 200 300 400 500 600 700 800 900 1000 y 0 200 400 600 800 1000
    2. _________ __________ Calculate the slope of the line.
    3. _________ __________ Determine the y-intercept of the line.
    4. ___________ Was momentum gained or lost?
    5. ___________ Toughie: How much momentum was gained or lost?

slope= ( y2 − y1 ) ( x2 − x1 )
Gravitational Potential Energy GPE = mgh
acceleration of gravity g = 980 cm/s²
Kinetic Energy KE = ½mѵ²
momentum = mass m × velocity ѵ