How is a joule defined?(1 point)
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 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 travel 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)
5,000 joules
50,000 joules
10 joules***
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)
25 joules
0.01 joule***
100 joules
0.0 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)
0 joules
100 joules***
0.01 joule
2,500 joules
wait sorry i did that wrong its:
1.It is the work done when a force of 1 newton is applied to an object for a
distance of 1 meter.
2. 200 joules
3. 25 joules
4. 0 joules
ok now thank me
thx bro i am really dumb and this helps
i got rid of the word d u m b when i typed it
please help idk what to do
Thank you cool cat XD? Thanks for the answers they were all right :)
cool cat is correct for connexus
A person raises a Box a weight of 50 neutrons by 0.5 m. How much does the person do in this action?
The work done by a person is given by the formula:
work = force x distance x cos(theta)
where force is in newtons, distance is in meters, and theta is the angle between the force and displacement vectors.
In this case, the person is raising a box with a weight of 50 newtons by a height of 0.5 meters against the force of gravity, which is acting downwards. The force exerted by the person is equal in magnitude but opposite in direction to the weight of the box.
So, the force exerted by the person is 50 newtons and the distance moved by the box is 0.5 meters vertically upwards. The angle between the force and displacement vectors is 180 degrees since they are in opposite directions.
Therefore, the work done by the person is:
work = force x distance x cos(theta)
= 50 x 0.5 x cos(180)
= -25 joules (negative sign indicates the work is done against the force of gravity)
So, the person does -25 joules of work in lifting the box.
A person raises a Box with a 50 neutron by 0.5 m. How much does the person do in this action?
The work done by the person in lifting the box depends on the force applied and the distance moved.
Work = Force x Distance
In this case, the force applied by the person is equal to the weight of the box, which is 50 Newtons. The distance moved is 0.5 meters. Therefore, the work done by the person is:
Work = 50 N x 0.5 m
= 25 Joules
So, the person does 25 Joules of work in lifting the box.