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This is a PHET LAb question worksheet.
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Uploaded on 05/19/2020
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Name: _________________________________ Newton’s second law of motion
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?