Answer:
Newton's second law
Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics.
Explanation:
A system of millions or billions of stars together with gas and dust, held together by gravitational attraction
Answer:
d
Explanation:
Gravitational force is a type of force that pulls objects to the Earth's surface.
Answer:
Work done, W = 0 J
Explanation:
Given that,
The total weight of the container, W = 30 N
A container of water is lifted vertically 3 m then returned to its original position. We know that the difference in final and initial position of an object is called its displacement. Here, its displacement is equal to 0 as it reaches to its original position.
Work done is given by :
As d = 0
W = 0
So, no work was done by the container of water. Hence, this is the required solution.