Newtons 2nd law simulation lab, Study notes of Physics

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2019/2020

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Name: _________________________________
Newton’s second law of motion
1. Go to the Forces and Motion: Basics simulation in the Newton’s Laws of Motion topic
page on MyGAC.
2. Click on Motion.
3. Experiment with the simulation to get used to changing the items on the skateboard
and the magnitude of the forces with which they are being pushed.
Part I - Newton’s First Law
Make sure the boxes that say “Force,” “Values,” “Masses,” and “Speed” are checked!
a. Apply a force of 50 N right to the box and let it go to max speed (man lets go
of box).
b. Describe the motion of the box using physics terms (i.e. velocity, acceleration,
inertia). Refer to the speedometer in your answer.
c. Reset the simulation (don’t forget to check force, values, masses, and speed
again).
d. Apply a force of 50 N to the right for about 5 seconds then reduce the applied
force to zero (the man should stop pushing).
e. Don’t reset the scenario. Describe the motion of the box. Refer to the
speedometer in your answer.
f. Reset the simulation.
g. Apply a force of 50N to the left.
h. Describe the motion of the box.
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Name: _________________________________ Newton’s second law of motion

  1. Go to the Forces and Motion: Basics simulation in the Newton’s Laws of Motion topic page on MyGAC.
  2. Click on Motion.
  3. Experiment with the simulation to get used to changing the items on the skateboard and the magnitude of the forces with which they are being pushed. Part I - Newton’s First Law Make sure the boxes that say “Force,” “Values,” “Masses,” and “Speed” are checked! a. Apply a force of 50 N right to the box and let it go to max speed (man lets go of box). b. Describe the motion of the box using physics terms (i.e. velocity, acceleration, inertia). Refer to the speedometer in your answer. c. Reset the simulation (don’t forget to check force, values, masses, and speed again). d. Apply a force of 50 N to the right for about 5 seconds then reduce the applied force to zero (the man should stop pushing). e. Don’t reset the scenario. Describe the motion of the box. Refer to the speedometer in your answer. f. Reset the simulation. g. Apply a force of 50N to the left. h. Describe the motion of the box.

Summary Newton’s First Law of Motion States “An object at rest stays at rest and an object in motion stays in motion with the constant speed and in the same direction unless acted upon by an unbalanced force.” Explain how your observations in a - h support this Law. Part II - Newton’s Second Law a. Reset the simulation (don’t forget to check force, values, masses and speed again). b. Remove the box and place a garbage can on top of the skateboard. c. Using your timer/phone, measure the amount of time it takes to reach maximum speed using a force of 50 N. d. Reset simulation and repeat steps a-c using 100 N of force. e. Reset simulation and repeat steps a-c using 200 N of force. Applied Force (N) Time To Max Speed (m:s.ms) 50 N 100 N 200 N

Part III - On Earth with friction The behavior of the skateboard in Part I and part II were not very realistic because friction was not present. At the bottom of the screen is a simulation that includes friction. Select this simulation. Make sure Forces and Speed are checked. a. Apply a force of 50 N. Describe the movement of the box. b. Apply a force of 100 N. Describe the movement of the box. c. Apply a force of 150 N. Describe the movement of the box. d. Check the box that says “Sum of Forces”. Repeat procedures a, b, and c. What was different about c?