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Net force Transitional Reasoning Practice

Physics · Forces & Newton's Laws · Physics · Forces & Interactions

2 Physics practice questions on Net force. Questions that build towards applied reasoning.

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Questions

  1. 1.

    A remote-controlled submersible with a weight of 450 N descends vertically through seawater. It experiences an upward buoyant force of 320 N and an upward hydrodynamic drag force of 60 N. To adjust its descent rate, an onboard thruster is engaged so that the resulting net vertical force on the submersible is 20 N downward. What magnitude and direction of force does the thruster exert?

    • A) 50 N downward
    • B) 70 N upward
    • C) 90 N upward
    • D) 50 N upward
  2. 2.

    An automated cart travels along a straight horizontal track during an equipment test. The cart experiences a forward propulsion force of 48 N directed to the east, a backward pull from a safety tether of 20 N directed to the west, and a constant kinetic friction force of 13 N acting to the west. What is the magnitude and direction of the net horizontal force acting on the cart?

    • A) 81 N to the east
    • B) 41 N to the east
    • C) 28 N to the east
    • D) 15 N to the east

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