Question
Download Solution PDFAn astronaut accidentally gets separated out of his small spaceship accelerating in inter stellar space at a constant rate of 100 m s-2. The acceleration of the astronaut the instant after he is outside the spaceship is Zero. This is in accordance with _________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Newton's first law of motion.
Key Points
- Newton's first law of motion, also known as the law of inertia, states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
- The astronaut, once separated from the spaceship, will continue to move at the same velocity it had at the moment of separation, due to the absence of any external force acting on him.
- The instant after separation, the astronaut experiences zero acceleration because no forces are acting on him in the vacuum of interstellar space.
- This principle is directly derived from Newton's first law, which underscores the concept that in the absence of a net external force, the acceleration of an object is zero.
Additional Information
- Newton's Laws of Motion
- Newton's first law (Law of Inertia): An object remains at rest or in uniform motion unless acted upon by an external force.
- Newton's second law: The force acting on an object is equal to the mass of that object times its acceleration (F=ma).
- Newton's third law: For every action, there is an equal and opposite reaction.
- Inertia
- Inertia is the resistance of any physical object to a change in its state of motion or rest.
- It is directly related to the mass of the object; higher mass means higher inertia.
- Interstellar Space
- Interstellar space is the physical space within a galaxy beyond the influence of any single star system.
- It is largely a vacuum with very low density of particles, making it an ideal environment to observe the effects of Newton's first law.
- Acceleration
- Acceleration is the rate of change of velocity of an object with respect to time.
- In the absence of an external force, an object will not experience acceleration, as per Newton's first law.
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