Normal Force in an Elevator - Regents Physics (RP) and AP...
Transcript of Normal Force in an Elevator - Regents Physics (RP) and AP...
Normal Force in an Elevator
Do now
When traveling up and down on an elevator, name two moments in which a person is:
• Accelerating upwards.
• Accelerating downwards.
• Not accelerating.
Announcements
• Question 11 will be regraded (calculus argument)
• Any voting done by midnight will count toward this marking period and then it will be restarted on Sunday and close by 11/19. For example, if you got the maximum votes (10 points), that will go toward yesterdays exam and then you will start from zero on Sunday.
Agenda
• 3 Most missed questions
• Problem set (15-18 minutes)
• Study technique for any advanced physics or mathematics class
Question 11 (True)
If an object is at rest, then the velocity-time graph will be a line with zero slope.
What you’re thinking
•If there is a zero slope on a velocity time graph, then the object is at rest.
Question 11 (True False)
If an object is at rest, then the velocity-time graph will be a line with zero slope.
Question 14 (False)
An object which is slowing down is represented by a line on a velocity-time graph which is moving in the downward direction.
Question 38 (True)
As a projectile rises towards the peak of its trajectory, the vertical velocity will decrease; as it falls from the peak of its trajectory, its vertical velocity will decrease.
Normal Force Practice Set (15 minutes)