Newton's first law of motion describes the following

A boy sitting on the topmost berth in the compartment of a train which is just going to stop on a railway station, drops an apple aiming at the open hand of his brother sitting vertically below his hands at a distance of about 2 meter. The apple will fall

A mass of $1 kg$ is suspended by a string $A$. Another string $C$ is connected to its lower end (see figure)., if the string $C$ is stretched slowly, then

When an object is at rest