





Card 7 / 8:
law of inertia
see Newton’s first law of motion

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Questions & Answers
what is the dimension of force
Explain why the acceleration of a ball bearing falling through a liquid decreases continuously until it becomes zero.
Due to drag force of liquid the ball decelerate continuously and becomes zero
Asim
kya pdte to beta tum.itna nhi pta
Pooja
it's a theory about gases....
Raghav
A fundamental theory of matter that explains physical properties in terms of the motion of atoms and molecule In kinetic theory , properties such as pressure and temperature are viewed as statistical properties of the overall behavior of large numbers of particles.
Manorama
@manorama tripathy ...
u r right almost....
Raghav
raghab singh thanks
Manorama
raghav mam not raghav 🙂🙃...can i ask where are u from....and where now u teaching..🙃
Raghav
raghav iam now phd in astrophysics from odisha
Manorama
hey my name is untichlobanty but you can call me unty
miss
Six small washers are spaced 10 cm apart on a rod of negligible mass and 0.5 m in length. The mass of each washer is 20 g. The rod rotates about an axis located at 25 cm, as shown in (Figure). (a) What is the moment of inertia of the system? (b) If the two washers closest to the axis are removed, what is the moment of inertia of the remaining four washers? (c) If the system with six washers rotates at 5 rev/s, what is its rotational kinetic energy?
what is impulse show that impulse is the rate change of linear momentum
The product of force and time =impluse .or impluse is the change of momentum of an object when the object is acted upon by a force for an interval of time.according to second law of motion F=ma .then,F=mvmu/t,Ft=mvmu ( proved) .
Manorama
0.06kg particle travelling to the right with the speed of, o. 4m/s strikes a 0.04kg particle traveling left with a speed of 0.02m/s .if the collision is perfectly elastic.. find the final speeds of the particles
Mckeran
pls explain how you got 0.05m/s....
muhammed
Why does time seem to flow only in one direction ?
القانون الاول الديناميكة الحرارية
In space gravity is not occur but how planets are binds with sun
by sun's gravity as No external force is present
Ashu
Plzz complete ly explain
Sahil
dear in space net gravitational field is zero thats not mean no gravity in space ... net gravity in space is zer
Raghav
It is wrong , gravity is present in space
Rambo
Space is a place external to atmosphere and not external to gravity
Rambo
What is a scalar quantity?
the quantity which have only magnitude
Ashu
thank you 😊...my pleasure
Ashu
Kids focus on study.. 🌚
Gehita
yup! @gehita...we can create a good environment and can do effective study....by helping each other
Ashu
define object in terms of your mind set
Gehita
why the magnitude of avector is always a positive number
what should it have been ?
Ravil
because the law of vector is squer root   .
Diyar
why vectors ca not devide?
Every action in physics should have a certain practical importance. İf there was such an action (operation) what would be it's practical importance ?
Ravil
it works by pulling objects vertical downward.
Obi
A covalent bond (also called a molecular bond) is a chemical bond that involves the sharing of electron pairs between atoms.
ChicagoK
A covalent bond (also known as a molecular bond) is a chemical bond that involves the sharing of electron pairs between atoms.
ChicagoK
covalent bond is a chemical bond that involves sharing pair of electrons between atoms in a molecule
Ogio
kovalent bağı bilmiyosan siktir git
EL
It is a mutual sharing of electrons.
Stark
A stone is thrown from the top of cliff 150 from sea level at angle 30° below the horizontal and it hits the sea 40m from the bottom of the cliff(take g=9.8m/s^2)
(1) calculate the initial speed
(2) the direction of the stone when it hits the sea
(a) Solution
V= 0m/s
g= 10m/s²
U(initial velocity)=?
S= 150m 40m= 110m
V² = U² + 2aS
U² = V²  2aS
U = √V²  2aS
U= √0²  2 x 9.8 x 110
=√2156
=46.43m/s
Sampson
this app scattered the numbers in my calculation, though the final answer remains the same.
Sampson
Source:
OpenStax, University physics volume 1. OpenStax CNX. Sep 19, 2016 Download for free at http://cnx.org/content/col12031/1.5
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