Question

give three examples of your own for each of newtons laws of motion. newtons 1st law 1. enter text here. 2. enter text here. 3. enter text here. newtons 2nd law 1. enter text here. 2. enter text here. 3. enter text here. newtons 3rd law 1. enter text here. 2. enter text here. 3. enter text here.

Explanation:

• Newton's 1st Law (Law of Inertia): An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
• Example 1: A book lying on a table remains at rest until a force (e.g., someone picking it up) acts on it.
• Example 2: When a car suddenly stops, passengers tend to keep moving forward (until seat - belts or other forces stop them) because of their inertia.
• Example 3: A hockey puck sliding on ice will continue to slide (with reduced speed due to friction, but still demonstrating inertia) until a force (like a player's stick or the goal) stops it.
• Newton's 2nd Law ($F = ma$, where $F$ is force, $m$ is mass, and $a$ is acceleration): The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
• Example 1: Pushing a small cart (less mass) with a certain force will result in a larger acceleration compared to pushing a large, loaded truck (more mass) with the same force.
• Example 2: When you throw a baseball (small mass), it accelerates more easily than when you try to throw a shot - put (large mass) with the same throwing force.
• Example 3: A car with a more powerful engine (larger force) can accelerate a heavier car (larger mass) at a reasonable rate, while a less powerful engine might struggle to accelerate the same heavy car.
• Newton's 3rd Law (For every action, there is an equal and opposite reaction): When one object exerts a force on another object, the second object exerts an equal and opposite force on the first object.
• Example 1: When you push against a wall (action force), the wall pushes back on you (reaction force).
• Example 2: A rocket expels gas downward (action force), and the gas exerts an upward force on the rocket (reaction force), propelling it into the air.
• Example 3: When a swimmer pushes water backward with their hands and feet (action force), the water pushes the swimmer forward (reaction force).

Answer:

• Newton's 1st Law:

1. A book on a table remains at rest until moved.
2. Passengers lurch forward when a car stops.
3. A sliding hockey puck keeps moving (until stopped).

• Newton's 2nd Law:

1. Small cart accelerates more than a truck with same push.
2. Baseball accelerates easier than a shot - put when thrown.
3. Powerful car engine accelerates heavy car better.

• Newton's 3rd Law:

1. Pushing a wall: wall pushes back.
2. Rocket expels gas (down), gas pushes rocket (up).
3. Swimmer pushes water (back), water pushes swimmer (forward).