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20 August, 11:52

Bob is pushing a box across the floor at a constant speed of 1.2 m/s, applying a horizontal force whose magnitude is 75 N. Alice is pushing an identical box across the floor at a constant speed of 2.4 m/s, applying a horizontal force.

What is the magnitude of the force that Alice is applying to the box?

F = N

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Answers (1)
  1. 20 August, 12:18
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    Answer:75 N

    Explanation:

    Given

    Bob is pushing the box with a force of 75 N with constant speed. Constant speed indicates that net force on the block is zero i. e. friction force is balancing the applied force.

    so friction force f=75 N

    If Alice is pushing an identical box with constant speed so net force acting on box must be equal to an applied force.

    As the friction force is 75 N so Alice must be applying a force of 75 N
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