How is a joule defined?(1 point)

Responses

It is the work done when a force of 1 newton is applied to accelerate an object by 1 kilogram per second squared.
It is the work done when a force of 1 newton is applied to accelerate an object by 1 kilogram per second squared.

It is the force needed to make an object with a mass of 1 kilogram accelerate by 1 kilogram per second squared.
It is the force needed to make an object with a mass of 1 kilogram accelerate by 1 kilogram per second squared.

It is the work done when a force of 1 newton is applied to an object for a distance of 1 meter.
It is the work done when a force of 1 newton is applied to an object for a distance of 1 meter.

It is the force needed to make an object with a mass of 1 kilogram travel 1 meter.

7 answers

It is the work done when a force of 1 newton is applied to an object for a distance of 1 meter.
A soccer player kicks a ball, applying a force of 1,000 newtons over a distance of 0.2 meter. The ball travels 50 meters down the field before another player stops the ball. How much work was done during the kick?(1 point)
Responses

200 joules
200 joules

10 joules
10 joules

50,000 joules
50,000 joules

5,000 joules
The work done during the kick can be calculated using the formula: work = force x distance. Plugging in the given values, we get:

work = 1000 newtons x 0.2 meters = 200 joules

Therefore, the correct answer is 200 joules.
A person raises a box with a weight of 50 newtons by 0.5 meter. How much work does the person do in this action?(1 point)
Responses

100 joules
100 joules

25 joules
25 joules

0.0 joules
0.0 joules

0.01 joule
To calculate the work done, we use the formula: work = force x distance. In this case, the force is equal to the weight of the box, which is 50 newtons, and the distance is 0.5 meters.

work = 50 newtons x 0.5 meters = 25 joules

Therefore, the correct answer is 25 joules.
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?(1 point)
Responses

100 joules
100 joules

0.01 joule
0.01 joule

0 joules
0 joules

2,500 joules
2,500 joules
In this scenario, since the wall does not move, no work is done. Work is defined as the force applied to move an object over a certain distance. In this case, although the person exerts a force of 500 newtons, the wall does not move. Therefore, the correct answer is 0 joules.