Question

Inertia depends on which two factors:
A. Height and weight
B. Length and width
C. Density and mass
D. Speed and velocity

Answer 1

Hint: In order to solve this question, first we will understand the concept of inertia which is one of the primary manifestations of mass. Then we will compare all the given options to find the required answer.

Complete answer:
Inertia is the internal property of an object due to which object opposes any force that would cause a change in motion and its state. Either body in motion or at rest both oppose forces that might affect its state and can accelerate the body. Newton’s first law explains the inertia of the body.
Inertia is one of the primary presentations of mass, which is a quantitative property of physical systems. Issac Newton defined inertia as his first law, which states that it is a power of resisting by which every body, as much as in it lies, endeavours to preserve its present state, whether it be rest or of moving uniformly forward in a straight line.
Inertia depends on density and mass. Inertia is directly proportional to mass and density of an object. More the mass of an object, more is the inertia of the body. If two bodies are moving then the body which has more inertia will be in moving for a longer time than the body which has less inertia, indirectly we can say the body which has more mass will also have more inertia.
Mass depends upon the density therefore density also affects the inertia. If the density is more then inertia is also more.
Therefore, we conclude that Inertia depends on density and mass.

So, the correct answer is “Option C”.

Note:
While solving this question, we should also know that the principle of inertia is one of the fundamental principles in classical physics that are still used today to describe the motion and the state of objects and also how they are affected by the applied forces on them.