Which of the following is NOT an example of inertia at rest?
- AFalling down backward when a vehicle starts immediately
- BFalling down of dust particles while dusting a cloth
- CThe detachment of leaves/fruits due to shaking
- DThe sudden application of brakes in a vehicle
Solution & Step-by-step Explanation
Inertia is the inherent property of an object to resist any change in its state of rest or uniform motion.
* Falling backward when a vehicle abruptly starts, dust particles separating when a cloth is beaten, and fruits dropping upon shaking a branch are clear manifestations of inertia of rest (the objects attempt to maintain their stationary state).
* On the contrary, when brakes are suddenly applied to a moving vehicle, passengers lean or fall forward because their upper body tends to continue moving forward due to inertia of motion.
* Falling backward when a vehicle abruptly starts, dust particles separating when a cloth is beaten, and fruits dropping upon shaking a branch are clear manifestations of inertia of rest (the objects attempt to maintain their stationary state).
* On the contrary, when brakes are suddenly applied to a moving vehicle, passengers lean or fall forward because their upper body tends to continue moving forward due to inertia of motion.