Question

Take 5 examples from your surroundings and give an explanation based on Newton's laws of motion.

Answer 1

1. Example 1:
   When we travel by bus, the stopped bus first feels backwards as it starts. This is an example of Newton's first law of motion.
   Explanation:
   1. When an object is at rest or in motion, the object does not change its state by its own inertia.
   2. When the bus is at rest, we are also at rest inside that bus.
   3. When the bus starts, sitting in the bus also gives us speed; But the upper part of the body tries to remain in a state of rest.
   4. As a result, inertia at rest tends to push us back. So, the bus starts in the next direction.
2. Example 2:
   When the carpet is lifted and shaken, the dust in it falls down. This is an example of Newton's first law of motion.
   Explanation:
   
   1. When the carpet is lifted and cleaned, its speed increases.
   2. There is dust on the carpet and it is at rest due to inertia.
   3. Shaking removes the dust particles from the carpet, gravity causes the loose particles to fall, and the carpet is cleaned.
3. Example 3:
   Players withdraw their hands while catching the ball. This is an example of Newton's second law of motion.
   Explanation:
   
   1. Players move their arms backwards to catch the ball, allowing more time for the hands to catch the ball.
   2. According to Newton's second law of motion, the change in momentum is proportional to the magnitude of the force.
   3. Taking more time to catch the ball results in a very small change in momentum. Therefore, the player catches the ball with less force and his hand is not jerked.
4. Example 4:
   The book placed on the table remains the same. This is an example of Newton's third law.
   Explanation:
   
   1. A book placed on a table has some weight because this weight is the force exerted on the table.
   2. According to Newton's third law of motion, action and reaction forces act simultaneously.
   3. Hence, the force exerted on the book towards the table and the weight of the book balance.
   4. Also, the two forces are balanced, and there is no acceleration. Hence, the book placed on the table remains stationary.
5. Example 5:
   A balloon filled with air goes forward when released from the hand. This is an example of Newton's third law of motion.
   Explanation:
   As the air is released downward, it exerts an equal opposite force on the balloon, pushing the balloon forward.