Question

Which of the following has the largest inertia?

A. a 10kg dog running down the street at 30mph
B a tighrope walker slowly crossing niagara falls
C. a 0.02kg bullet moving down the barrel at 800mph
D. a semi truck parked in a parking lot

Answer 1

Option D, a semi truck parked in a parking lot

Reason: Inertia is the state of a body which needs a force to come into the act of motion.

The more massive the object is the more is its inertia.