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Real life scenarios in first law of motion
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The First Law of Motion, also known as Newton's First Law of Motion or the Law of Inertia, states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity, unless acted upon by a net external force. Here are some real-life scenarios that illustrate this principle:
1. **Seat Belts in Cars**: When a car suddenly stops, the passengers inside continue moving forward due to inertia. This is why seat belts are important; they provide the necessary external force to bring the passengers to a stop safely along with the car.
2. **Tablecloth Trick**: When a tablecloth is quickly pulled from under dishes on a table, the dishes tend to remain in place due to inertia. This demonstrates that the dishes resist the change in motion until a significant external force acts on them.
3. **Sports Activities**: In basketball, when a player dribbles the ball, the ball will keep rolling in the same direction until friction (the external force) with the ground slows it down or stops it. Similarly, a soccer ball will remain at rest until kicked.
4. **Grocery Cart**: If you push a grocery cart, it will start moving. However, once you stop applying force, it will slowly come to a stop due to friction acting as the external force.
5. **Rider on a Bicycle**: When riding a bicycle and suddenly stopping pedaling, the bike continues to move forward due to inertia until friction from the ground and air resistance gradually slows it down.
6. **Objects on a Flat Surface**: A book resting on a table will stay at rest until someone pushes it (external force). Similarly, a book sliding across a smooth surface will keep moving until friction from the surface slows it down.
7. **Spacecraft in Orbit**: Once in space, a spacecraft will continue to travel in a straight line at a constant speed if no forces act upon it. This is evident in the motion of satellites and the International Space Station.
8. **Throwing a Ball**: When you throw a ball in a vacuum (where there is no air resistance), it will travel indefinitely in a straight line unless acted upon by another force (like gravity when it comes back down).
9. **Drinking from a Straw**: When drinking, if you remove the straw from a cup, the liquid will remain at the same level until you apply an external force (like tipping the cup).
By analyzing these scenarios, we can see how the First Law of Motion is evident in everyday life, emphasizing that the state of motion of an object will not change unless an external force is applied.
1. **Seat Belts in Cars**: When a car suddenly stops, the passengers inside continue moving forward due to inertia. This is why seat belts are important; they provide the necessary external force to bring the passengers to a stop safely along with the car.
2. **Tablecloth Trick**: When a tablecloth is quickly pulled from under dishes on a table, the dishes tend to remain in place due to inertia. This demonstrates that the dishes resist the change in motion until a significant external force acts on them.
3. **Sports Activities**: In basketball, when a player dribbles the ball, the ball will keep rolling in the same direction until friction (the external force) with the ground slows it down or stops it. Similarly, a soccer ball will remain at rest until kicked.
4. **Grocery Cart**: If you push a grocery cart, it will start moving. However, once you stop applying force, it will slowly come to a stop due to friction acting as the external force.
5. **Rider on a Bicycle**: When riding a bicycle and suddenly stopping pedaling, the bike continues to move forward due to inertia until friction from the ground and air resistance gradually slows it down.
6. **Objects on a Flat Surface**: A book resting on a table will stay at rest until someone pushes it (external force). Similarly, a book sliding across a smooth surface will keep moving until friction from the surface slows it down.
7. **Spacecraft in Orbit**: Once in space, a spacecraft will continue to travel in a straight line at a constant speed if no forces act upon it. This is evident in the motion of satellites and the International Space Station.
8. **Throwing a Ball**: When you throw a ball in a vacuum (where there is no air resistance), it will travel indefinitely in a straight line unless acted upon by another force (like gravity when it comes back down).
9. **Drinking from a Straw**: When drinking, if you remove the straw from a cup, the liquid will remain at the same level until you apply an external force (like tipping the cup).
By analyzing these scenarios, we can see how the First Law of Motion is evident in everyday life, emphasizing that the state of motion of an object will not change unless an external force is applied.
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