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Warm up: 9/26

Quiz by Julie Edwards

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3 questions
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  • Q1
    A roller coaster containing four cars is accelerating at 15 m/s2 before it comes to an abrupt stop at the end of the ride. The mass of one car is 200 kg. How much force was exerted on the roller coaster to bring it to a stop?
    12000 N
    800 N
    3000 N
    30s
  • Q2
    Two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table to Student 2. If the force of friction resisting the student’s push is 4 N, what is the net force acting on the board?
    Question Image
    4 N
    14 N
    10 N
    6 N
    30s
  • Q3
    The diagram below shows a boat moving north in a river at 3 m/s while the current in theriver moves south at 1 m/s. How will the boat be affected if it enters a part of the river where the current is moving south at 2m/s?
    Question Image
    The boat will stop.
    The boat will move west.
    The boat will move slower.
    The boat will move faster.
    30s

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