If the force moving an object point's at least partially in the opposite direction of the object's motion, the work is considered to be what
a deaccelerating force? There are hundreds of things here that would work.
an opposing force?
if the force moving an object points at least partially in the opposite direction of the objects motion the work is considered to be what ?
for apex its negative
If the force moving an object points at least partially in the opposite direction of the object's motion, the work done on the object is considered to be negative.
To understand why, let's first define work. In physics, work is defined as the product of the force applied on an object and the displacement of the object in the direction of the force. Mathematically, work (W) can be calculated as:
W = F * d * cos(theta)
Where:
- W is the work done on the object
- F is the magnitude of the force applied on the object
- d is the displacement of the object
- theta is the angle between the force vector and the displacement vector
The angle theta is crucial here. If the force and displacement vectors are aligned (theta = 0 degrees), then the work done is maximum. If the angle theta is 90 degrees, meaning the force is perpendicular to the displacement, then the work done is zero since there is no component of force in the direction of displacement.
Now, if the force is partially in the opposite direction of the object's motion, meaning the angle theta is greater than 90 degrees, then the cosine of theta will be negative. Since work (W) is the product of the force, displacement, and cos(theta), a negative cos(theta) will result in a negative work done on the object.
In simple terms, when the force acts in the opposite direction of the motion, it does negative work because it is opposing the displacement. It is like trying to push an object in one direction while a force tries to pull it back in the opposite direction, resulting in a net loss of energy or work.
Therefore, if the force moving an object points at least partially in the opposite direction of the object's motion, the work done on the object is considered to be negative.