a person gets a running start toward a wall from 5 meters away. the person pushes the wall with a force of 500 newtons, but the wall does not move. how much work is done by the person?
a)2,500 joules
b)100 joules
c)0.01 joules
d) 0 joules
The work done by a person is calculated using the equation:
Work = Force x Distance x Cos(θ)
where:
Force is the applied force (in newtons),
Distance is the distance over which the force is applied (in meters),
Cos(θ) is the angle between the force and the direction of motion (if the force is applied perpendicular to the direction of motion, Cos(θ) equals 0).
In this case, the person is pushing the wall with a force of 500 newtons, but the wall does not move. This means that the angle between the force and the direction of motion is 90 degrees, and Cos(θ) = 0.
Therefore, the work done by the person is:
Work = 500 newtons x 5 meters x Cos(90°) = 0 joules
So the correct answer is option d) 0 joules.