Question : Newton's first law of motion is also known as:
Option 1: Law of reaction
Option 2: Law of acceleration
Option 3: Law of inertia
Option 4: None of these
Correct Answer: Law of inertia
Solution : It is first law of motion. According to this law , " A body at rest will remain at rest and a body is in motion will remain in motion at the same speed and in the same direction unless acted on by an external.