psf1 054 064 ↹ 20 February 2015 ↹ Name:

1. _________ _________ If Leah pulls the 70 kg mass of Dana on the RipStik with a force of 56 Newtons, what will be the resulting acceleration?
2. Write out Newton's first law of motion in words.
3. Write Newton's second law.
4. Write Newton's third law.
5. Give an example of Newton's first law.
6. Which of Newton's laws did the yurt circle demonstrate?

7. force (gmf)	load (gmf)
   20	50
   80	200
   140	350
   180	450

   The data are measurements made for a three load line pulley.
   1. ____________ Based on the data, what is the actual mechanical advantage for the pully system?
   2. ____________ The pulley system had three load lines. What is the ideal mechanical advantage?
   3. ____________ Use the preceding two questions to calculate the efficiency of the pulley system.
8. For the following pulley systems, write on the picture the Ideal Mechanical Advantage for each system:
   
9. Temperatures in Celsius:
   • _________℃ What is the temperature of a mix of melting ice and water?
   • _________℃ What is the temperature of melting solidified coconut oil?
   • _________℃ What is the typical daily indoor room temperature in Pohnpei?
   • _________℃ What is the temperature of the healthy living human body?
   • _________℃ What is the temperature of a boiling water?
10. Explain the difference between heat and temperature.
11. List the three ways in which heat is moved and what that term means:
    ______________ Meaning:
    
    
    ______________ Meaning:
    
    
    ______________ Meaning:
    
    
    

$\text{slope}=\frac{(y_2-y_1)}{(x_2-x_1)}$
Force F = mass m × acceleration a
$\text{efficiency}=\frac{\text{Actual Mechanical Advantage}}{\text{Ideal Mechanical Advantage}}$