Answer:
there is no net force acting on the object
Explanation:
If an object is moving with a constant velocity, then by definition it has zero acceleration. So there is no net force acting on the object. The total work done on the object is thus 0 (that's not to say that there isn't work done by individual forces on the object, but the sum is 0 ).
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In a closed system, energy in form of heat (work) can be exchanged but not matter.
The answer to your question is C.
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Answer:
The gravitational potential energy of the skydiver=
Given:
Mass of the skydiver=80kg
Distance of the skydiver from the earth=100m
To find:
Gravitational potential energy of the skydiver
<u>Step by Step Explanation:</u>
Solution:
According to the formula, Gravitational Potential Energy (GHE) is calculated as
Where m= Mass of the skydiver
g=Acceleration due to gravity
h=Distance of the skydiver from the earth
Substitute the known values in the above equation we get
Result:
Thus the gravitational potential energy of the skydiver is =
Answer: The resultant displacement vector is 5.6km