Question

When a moving train stops suddenly, the passengers are pushed forwards. Which of the following law can explain this example?
1. Newton's first law
2. Newton's second law
3. Newton's third law
4. Newton's law is not applicable here.

Answer 1

Correct Answer - Option 1 : Newton's first law

CONCEPT:

• Newton's first law says that If an object is at rest it remains at rest, or if in motion, remains in motion at a constant velocity unless an external force acts on it.
• This law is also known as the law of inertia.

EXPLANATION:

• According to the law of inertia If an object is in motion, it remains in motion at a constant velocity unless an external force acts on it.
• Here the object is the passenger.
• He is moving with constant velocity.
• When the train stops, there is no force acting on the object (passenger), so he will remain in motion.
• This is why when suddenly the train stops, due to the law of inertia or Newton's first law of motion, the passengers are pushed forward.
• So the correct answer is option 1.