Question

how is a joule defined?

answers :

it is the force needed to make an object with a mass of 1 kilos travel 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 work done when a force of 1 newton is applied to accelerate an object by 1 kilo per second squared.
it is the force needed to make an object with a mass of 1 kilo accelerate by 1 kilo per second squared.

Answer 1

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?

answers:

5,000 joules
10 joules
50,000 joules
200 joules

Answer 2

The correct definition of a joule is:

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

This is in line with the definition of work in physics, where 1 joule (J) is equivalent to 1 newton of force acting over a distance of 1 meter.