Politics and Law

What is the first law of motion?

1. Newton’s First Law of Motion (Inertia) An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

What is the first law of motion answer?

Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

What is an example of the first law of motion?

A Ball Rolling on the Ground

As per Newton's first law of motion, a ball rolling on the ground tends to maintain its state of motion till infinity, if no external force acts on it; however, the force of friction acting on the ball from the outside helps to break the motion of the ball and brings it to rest.

What are the 3 main laws of motion?

In the first law, we understand that an object will not change its motion unless a force acts on it. The second law states that the force on an object is equal to its mass times its acceleration. And finally, the third law states that there is an equal and opposite reaction for every action.

What is the first law of motion class 9?

Newton's first law of motion states that a body at rest will remain at rest position only and a body which is in motion continues to be in motion unless otherwise they are acted upon by an external force.

How does friction affect the motion of an object?

The force of friction opposes the motion of an object, causing moving objects to lose energy and slow down. When objects move through a fluid, such as air or water, the fluid exerts a frictional force on the moving object.

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When an object at rest velocity and acceleration is zero?

Newton’s first law is a special case of Newton’s second law when F = 0. Since m is not zero, acceleration must be zero. Hence, the velocity must remain contant. An object at rest is one with zero velocity.

What are the types of inertia 3 )? List and explain?

Types of Inertia

It is of three types: The inertia of rest: Tendency of a body to remain in the state of rest. The inertia of direction: Tendency of a body to remain in a particular direction. The inertia of motion: Tendency of a body to remain in a state of uniform motion.

How does the law of inertia relate to seat belt safety?

So, when you come to a stop, you wouldn’t stop motion unless a force is caused to change your motion and put you at rest. If you were wearing a seat belt, the seat belt would act as the unbalanced force, it would stop you from being in motion. Inertia is the property of an object to resist a change in motion.

Who discovered gravity?

Isaac Newton Kneller Painting. Far more than just discovering the laws of gravity, Sir Isaac Newton was also responsible for working out many of the principles of visible light and the laws of motion, and contributing to calculus.

What’s Newton’s 4th law?

Arthat Corona padhai ka vyutkrimanupati hota hai (Newton’s fourth law: When Corona increases, study decreases. When Corona decreases, study increases. This means that Corona is inversely proportional to study).”

What is kinetic energy explain with example?

Kinetic energy is the energy of motion, observable as the movement of an object, particle, or set of particles. Any object in motion is using kinetic energy: a person walking, a thrown baseball, a crumb falling from a table, and a charged particle in an electric field are all examples of kinetic energy at work.

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How can you make something less friction?

Methods for Reduction friction:
  1. Make the surfaces little more smoother. …
  2. Lubrication is another way to make a surface smoother. …
  3. Make the object more streamlined. …
  4. Reduce the Normal force acting between the surfaces in contact. …
  5. Reduce the contact between the surfaces, so that less number of bonds will be formed.
Methods for Reduction friction:
  1. Make the surfaces little more smoother. …
  2. Lubrication is another way to make a surface smoother. …
  3. Make the object more streamlined. …
  4. Reduce the Normal force acting between the surfaces in contact. …
  5. Reduce the contact between the surfaces, so that less number of bonds will be formed.

How do you make a friction project?

Test friction in everyday life with these simple activities:
  1. Hold your hand out the car window when it is moving. …
  2. Try sliding on the floor in socks. …
  3. Use friction to create static electricity by rubbing a balloon on hair. …
  4. Erasers work by friction. …
  5. Head to a playground an slide down the fire pole.
Test friction in everyday life with these simple activities:
  1. Hold your hand out the car window when it is moving. …
  2. Try sliding on the floor in socks. …
  3. Use friction to create static electricity by rubbing a balloon on hair. …
  4. Erasers work by friction. …
  5. Head to a playground an slide down the fire pole.

How does mass affect acceleration when the applied force is kept constant?

Since the mass does not change as the acceleration increases, we can say that force is equal to acceleration. Therefore, if you double the force you double the acceleration. If you increase the mass at a given force the rate of acceleration slows. Therefore, mass is inversely proportional to acceleration.

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Is displacement is a scalar or vector quantity?

Distance is a scalar quantity while displacement is a vector quantity.

What is friction Class 11?

Hint: Friction is a type of relative force that acts as a resistance between two bodies that are in contact with each other. In other words when two bodies are in contact with each other there exists a force which opposes their relative motion.

How does friction affect motion?

The force of friction opposes the motion of an object, causing moving objects to lose energy and slow down. When objects move through a fluid, such as air or water, the fluid exerts a frictional force on the moving object.

What is Newton’s third law?

Newton’s third law simply states that for every action there is an equal and opposite reaction. So, if object A acts a force upon object B, then object B will exert an opposite yet equal force upon object A.

Which of the following phenomenon applies the first law of motion?

Due to inertia, the passengers are pushed backwards whenever a train starts suddenly from the rest. The First Law of Motion states that every body maintains its initial state of rest or motion with uniform speed on a straight line unless an external unbalanced force acts on it.

Did apple really fall on Newton?

There’s no evidence to suggest the fruit actually landed on his head, but Newton’s observation caused him to ponder why apples always fall straight to the ground (rather than sideways or upward) and helped inspired him to eventually develop his law of universal gravitation.

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