If Luke pushes his sister in a wagon down the driveway that is 14 meters long and it takes 22 Newton’s of force how much work di
1 answer:
Answer:
308 J
Explanation:
The work done by a force applied parallel to a displacement is given by:
where
F is the magnitude of the applied force
d is the displacement
In this problem, we have
F = 22 N is the force applied
d = 14 m is the displacement of the wagon
Therefore, assuming that the force is parallel to the displacement, the work done is
You might be interested in
Answer:
The speed after being pulled is 2.4123m/s
Explanation:
The work realize by the tension and the friction is equal to the change in the kinetic energy, so:
(1)
Where:
Because the work made by any force is equal to the multiplication of the force, the displacement and the cosine of the angle between them.
Additionally, the kinetic energy is equal to , so if the initial velocity
is equal to zero, the initial kinetic energy
is equal to zero.
Then, replacing the values on the equation and solving for , we get:
So, the speed after being pulled 3.2m is 2.4123 m/s