The statement that says the more mass a body has, the more inertia it has is correct about inertia (option A).
First, we need to recall the concept of inertia.
Inertia is the tendency of an object to oppose any change in its state. An object at rest will remain in this state until a force acts on it to move it, and vice versa, an object in motion will tend to keep the same velocity until a force acts on it to increase or slow down its speed.
Let's evaluate each statement
A. The more mass a body has, the more inertia it has.
It is true. The more body mass, the more tendency it will have to oppose the change in its state, so the force needed will be greater.
[tex] F = ma [/tex]
We can see in the above equation that the force applied is proportional to the body mass.
B. The more mass a body has, the less inertia it has.
It is false. In statement A, we said that the more body mass, the more inertia it has.
C. The amount of inertia a body has is not dependent upon its mass.
It is false. According to the inertia concept, the inertia of a body is directly proportional to its mass.
D. An object has to be moving to have inertia.
It is false. As we said above, inertia is related to a body in a state of motion as well as in a state of rest.
Therefore, statement A is correct about inertia.
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I hope it helps you!
