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Practice Questions: Laws Of Motion Video Lecture | Crash Course for NEET
FAQs on Practice Questions: Laws Of Motion Video Lecture - Crash Course for NEET
| 1. What are the three laws of motion? |  |
Ans. The three laws of motion, also known as Newton's laws of motion, are as follows:
1. The law of inertia: An object will remain at rest or continue to move at a constant velocity unless acted upon by an external force.
2. The law of acceleration: The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
3. The law of action-reaction: For every action, there is an equal and opposite reaction.
| 2. What is the law of inertia? | |
Ans. The law of inertia, also known as Newton's first law of motion, states that an object will remain at rest or continue to move in a straight line at a constant velocity unless acted upon by an external force. In other words, an object will maintain its state of motion unless compelled to change by an external force.
| 3. How does the law of acceleration relate force and mass? | |
Ans. The law of acceleration, also known as Newton's second law of motion, states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Mathematically, the law can be expressed as F = ma, where F represents the net force applied to an object, m represents the mass of the object, and a represents the resulting acceleration.
| 4. Explain the law of action-reaction. | |
Ans. The law of action-reaction, also known as Newton's third law of motion, states that for every action, there is an equal and opposite reaction. This means that whenever an object exerts a force on another object, the second object exerts an equal and opposite force back on the first object. These forces always occur in pairs and act on different objects.
| 5. How do Newton's laws of motion apply to real-life situations? | |
Ans. Newton's laws of motion are applicable to various real-life situations. For example:
- The law of inertia explains why passengers lurch forward in a car when it suddenly stops.
- The law of acceleration helps understand how a rocket accelerates in space by expelling gases in the opposite direction.
- The law of action-reaction explains how a person can swim by pushing water backward with their arms and legs, propelling themselves forward.
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