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25 July, 09:51

A ball has a mass of 140 g. What is the force needed to accelerate the ball at 25 m/s2? (Formula: F=ma)

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Answers (2)
  1. 25 July, 10:07
    0
    3.5Newton of force is needed to accelerate 140g of ball at 25m/s2.

    We have,

    Mass (m) : 140g : 140/1000 kg: 0.14g

    (Mass should be in SI unit)

    Acceleration (a) : 25m/s2

    We khow that,

    F=ma

    Or, F=0.14*25 kgm/s2

    Or, F=3.5Kgm/s2

    F=3.5N
  2. 25 July, 10:21
    0
    3.5 Newton

    Explanation:

    We are given;

    Mass of the ball = 140 g

    Acceleration = 25 m/s²

    Required to find the force;

    According to Newton's second law of motion, the resultant force on a body in motion and the rate of change in linear momentum are directly proportional.

    That is;

    Thus; F = ma, where F is the resultant force, m is the mass and a is the acceleration.

    To get the force we substitute the value of m and a in the formula;

    Therefore;

    F = 0.14 kg * 25 m/s²

    = 3.5 N

    Hence, the force needed to accelerate the ball is 3.5 N
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