Answer:(c) All three.
An accelerometer is a sensor that measures acceleration forces, including the changes in velocity and orientation of an object. It is commonly used in various electronic devices to detect motion, tilt, and acceleration. Let's analyze each action:
Detection of a car crash/collision that results in the deployment of airbags almost instantaneously: In this case, an accelerometer is required to detect the sudden deceleration or change in velocity that occurs during a car crash. The accelerometer senses the rapid change in motion and triggers the deployment of airbags to protect the occupants.
Detection of an accidental free fall of a laptop towards the ground that results in the immediate turning off of the hard drive: Here, an accelerometer is used to detect the rapid change in orientation and acceleration caused by the laptop falling towards the ground. The accelerometer senses the free fall and triggers the action of turning off the hard drive to prevent damage.
Detection of the tilt of a smartphone that results in the rotation of the display between portrait and landscape mode: In this scenario, an accelerometer is employed to detect the orientation or tilt of the smartphone. It senses the change in angle and adjusts the display orientation accordingly, allowing the screen to switch between portrait and landscape mode.
Here are the questions organized in proper order: