Question

define newtons first second and third law of motion with two examples each​

Answer 1

Answer:

1. the first law, an object will not change its motion unless a force acts on it.
2. In the second law, the force on an object is equal to its mass times its acceleration.
3. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
4. ex: The motion of a ball falling down through the atmosphere, or a model rocket being launched up into the atmosphere
5. ex: the same force to push a truck and push a car, the car will have more acceleration than the truck, because the car has less mass.
6. ex: when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air.

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Answer 2

CONCEPT: Set of three equations which gives the relation between the forces acting on a body and the motion of the body is called Newton's laws of motion given by English physicist and mathematician Isaac Newton.

GIVEN: Newtons first, second and third law of motion

FIND: Define the three laws of motion

SOLUTION:

1. NEWTONS FIRST LAW -

• Newtons first law is also known as law of inertia
• Newtons first law states that a body in rest continues to be in the state of rest and a body in motion continues to move unless an external force is applied.
• The motion of a ball falling down through the atmosphere and a rocket being launched up into the atmosphere are two examples of Newton's first law of motion.

2. NEWTONS SECOND LAW -

• Newtons second law states that the time rate of change of momentum is force or if a body of mass M is acted upon by a force F then it is accelerated in the direction of force
• $f = ma$
• Pushing a car or a truck and hitting a ball are two examples of Newton's second law

3.NEWTONS THIRD LAW -

• This law is also known as the law of action and reaction.
• It states that every action as equal and opposite reaction.
• Swimming or rowing a boat and standing on ground or sitting on a chair are two examples of Newton's third law.

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