Are action and reaction forces equal?
Formally stated, Newton’s third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.
Is inertia dependent on gravity?
False – Inertia (or mass) has nothing to do with gravity or lack of gravity. In a location where g is close to 0 m/s/s, an object loses its weight. Yet it still maintains the same amount of inertia as usual. It still has the same tendency to resist changes in its state of motion.
What effect does gravity work against inertia?
When an object is falling freely, the force of gravity is doing work against the resistance from inertia and the air resistance or drag on the object. The forces acting on the object are gravity and the opposite or resistive forces of inertia and air resistance.
How does inertia change the effects of gravity?
Inertia – A body due to its mass (energy), creates a dip of space around it. That dip makes a force be required to make a change in state of the body. Hence causes inertia. Gravity – Same dip (curve) due to mass (energy) of the body manifests as gravity for other bodies.
Why is inertia important to the moon?
It is the inertia of the moon that keeps it moving, and the gravitational force that simply bends its path. If we could cut gravity off instantly, the moon would continue on a straight line (by its inertia) on a path that is tangent to the orbit at the point of switching-off.
What does inertia do to planets?
Like all objects with mass, planets have a tendency to resist changes to their direction and speed of movement. This tendency to resist change is called inertia, and its interaction with the gravitational attraction of the sun is what keeps the planets of the solar system, including Earth, in stable orbits.
What is the relationship between gravity and inertia?
The strength of gravity depends on: mass of objects and distance between objects ● Inertia: an object’s tendency to resist a change in motion ● The greater an object’s mass, the greater its’ inertia and the larger the force needed to overcome the inertia.