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Anonymous asked in Science & MathematicsPhysics · 1 decade ago

In a college homecoming competition, 16 students lift a sports car.?

While holding the car off the ground, each student exerts an upward force of 400 N. (a) What is the mass of the car in kilograms? (b) What is the weight in pounds?

2 Answers

  • 1 decade ago
    Favorite Answer

    400*16 = 6400N total upward force.

    F = ma, therefore

    m = F / a, where a is the acceleration due to gravity, 9.8 m/s²

    m = 6400 / 9.8 = 653 kg

    1 kg = 2.20462262 pounds, so 653 kg = approx. 1440 pounds.

  • ?
    Lv 7
    1 decade ago

    6400 N * .2248 lb/N = 1438.72 lb

    kg = unit of mass

    lb = unit of force

    Xkg ≠ Ylb

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