Solve Physics: 80 kg Person Applies 2000 N Force to Ground

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An 80 kg person applies a vertical force of 2000 N to the ground and experiences a braking force of 1000 N. According to Newton's third law, the ground exerts an equal and opposite force of 2000 N upward on the person. The net force acting on the person is calculated by considering both the upward force and the downward gravitational force, which is the person's weight (approximately 784 N). The resultant acceleration can be determined using Newton's second law, F = ma, where the net force is divided by the mass. The discussion emphasizes understanding the forces at play and applying fundamental physics equations to find the acceleration.
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Homework Statement


A person with a mass of 80 kg applies a vertical force to the ground of magnitude
2000 N, and has a braking force of 1000 N. What is the resultant acceleration of the
person (magnitude only)?
Please help, never done physics before. Thanks


Homework Equations





The Attempt at a Solution

 
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From Newton's third law we know that if the person applies a force of 2000N on the ground then the ground applies an equal and opposite force on the person. So there is 2000N of force pushing the person up, but what other forces are acting on the person and in which direction do they point? Also, can you think of Newton's famous equation that relates force to acceleration?
 

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