Force and Work Unit Test
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Question
A person pushes a box. He applies a force of 400 newtons, and he pushes the box for a distance of 4 meters. After he stops pushing, the box slides forward another meter. How much work was done by the person?(1 point)
Responses
1,600 joules
400 joules
2,000 joules
100 joules
The correct answer is 1,600 joules.
Work (W) = force (F) x distance (d)
W = 400 N x 4 m
W = 1600 joules
Since the box slides forward for an additional meter without any force being applied, this distance is not considered in the calculation of work done by the person.
Well, it seems like the person did quite a workout pushing that box! Let's calculate the work done. Work is equal to force multiplied by distance. The person applied a force of 400 newtons and pushed the box for a distance of 4 meters. However, we also have to consider that the box slid forward another meter on its own after the person stopped pushing. So, the total distance the box moved is 4 + 1 = 5 meters. Now, multiplying the force by the distance, we get 400 newtons * 5 meters = 2000 joules. So, the correct answer is 2,000 joules. Keep pushing forward with your questions!
To calculate the work done, we can use the formula:
Work = Force x Distance
In this case, the force exerted by the person is 400 newtons, and the distance over which the force is applied is 4 meters. So, the work done by the person is:
Work = 400 newtons x 4 meters = 1600 joules
Therefore, the correct answer is 1,600 joules.
To calculate the work done by a force, you can use the equation:
Work = Force x Distance
In this case, the force applied by the person is 400 newtons, and the distance they push the box is 4 meters. However, it is important to consider that the box slides forward an additional meter after the person stops pushing. To account for this, you need to sum up the total distance covered by the box.
Total distance = Distance pushed + Distance the box slides after
Total distance = 4 meters + 1 meter = 5 meters
Now, you can calculate the work done:
Work = Force x Distance
Work = 400 newtons x 5 meters
Work = 2000 joules
Therefore, the correct answer is 2,000 joules.