Which of the following is NOT an example of inertia at rest?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e The sudden application of brakes in a vehicle.
The sudden application of brakes in a vehicle is not an example of inertia at rest; it is an example of inertia of motion.
Inertia of motion refers to the tendency of a moving object to continue moving at the same velocity unless acted upon by an external force. When brakes are suddenly applied, the vehicle decelerates, but the passengers inside tend to continue moving forward due to their inertia of motion. This is why passengers may lurch forward when a vehicle stops suddenly.