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# How much force can a human exert?

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Newton's second law of motion states that the force that an object exerts is equal to that object's mass times its acceleration. The amount of force that individuals can exert is directly proportional to their mass and the speed at which they are moving.

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Credit: U.S. Army CC-BY-2.0

For example, if a 45 kg person and a 62 kg person are both accelerating at 2 m/s^2, the 62 kg person exerts a greater force than the 45 kg person. Similarly, if both people are 62 kg and one of them is accelerating at 2 m/s^2 and the other at 3 m/s^2, the person accelerating at 3 m/s^2 has a greater force than the person accelerating at 2 m/s^2.

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## Related Questions

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The net force of an object can be determined if the mass and acceleration are known. Net force is determined by multiplying the mass of the object by its rate of acceleration.

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The formula for calculating net force is the mass of the object multiplied by the acceleration. This formula is commonly written as "F = ma", where "F" represents the net force, "m" represents the mass and "a" represents the acceleration.

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The law of acceleration is formally referred to as Newton's Second Law of Motion and defines the rate of acceleration as a product of the force exerted on the object and the mass of the object. The rate of acceleration increases as the net force increases. The inverse is true for mass, with the acceleration decreasing as the mass increases.