Explain first law of newton, Physics

Assignment Help:

Explain Newton's First Law

In 1665, at the age of 23, Newton developed his famous Laws of Motion. They are commonly known as Newton's first, second and third law. Aside from the catchy names, these laws are important because they are the first realistic attempt to fully describe how objects move. They represent a turning point in our understanding of the physical world. To summarize: until Newton came around we were clueless.

Long ago, an ancient Greek named Aristotle believed that objects needed an external force in order to move. All motion, according to Aristotle, resulted from a push a pull or the nature of the object itself. If an object was in its proper place it would cease to move.

Galileo turned it all upside down by stating that in the absence of force an object will keep moving in the same direction. In other words, objects don't like to change the way that they move. This tendency to resist change is called an object's inertia.

The Law of Inertia - Every object continues in its state of rest, or of motion in a straight line at constant speed, unless it is compelled to change that state by forces exerted upon it.

Even though we like to attribute Law #1 to Newton (because it sounds better) Newton's first law is pretty much the same as Galileo's principle.

Every object in the world possesses inertia. The amount of inertia depends on the amount of matter present. Inertia is proportional to mass.

Example 1 - The magic trick of pulling the tablecloth out from under the dishes depends upon the inertia of the dishes which keeps them from moving in the same direction as the tablecloth. This inertia results from the force of friction between the tablecloth and the dishes. The dishes tend to stay at rest and fall straight down onto the table.

Example 2 - A semi-tractor trailer moving along the highway at 29 m/s (65 mph) hits a tumbleweed in the road. Does the truck stop? Of course not. It would take a lot more than a tumbleweed to stop such a heavy, fast moving truck which tends to stay in motion.


Related Discussions:- Explain first law of newton

ELECREIC CIRCUITS AND ELECTRONICS, With the help of a circuit diagram, expl...

With the help of a circuit diagram, explain how regenerative feedback is provided in an Hartley oscillator?

Image of an object formed in converging thin lens, A converging thin lens h...

A converging thin lens has a focal length of 27 centimetres. An object is placed 9 centimetres from the lens.  Where is the image of this object formed? Ans: The images of g

Geometry, define hyperbola please

define hyperbola please

Explain adiabatic process, In an adiabatic process, the body neither absorb...

In an adiabatic process, the body neither absorbs heat nor does it refuse energy, i.e. in this phenomena there is no heat exchange (Δ Q  = 0). Thus from first law of thermodynam

Find the direction of wave, A plane e-m wave goes along vertical downward d...

A plane e-m wave goes along vertical downward direction. At a provided instant, the direction of E at a point is towards east. Find the direction of B?

Series Combinations of Resistance, how to verify the laws which govern the ...

how to verify the laws which govern the resistance which are connected in series

How many types of illuminators are there, How many types of illuminators ar...

How many types of illuminators are there? As there are no standards inside the industry, the term "type" is slightly confusing. Regading to power usage, the lamp illuminators c

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd