Math, asked by anjukhatri1981, 3 months ago

a³-a=? Give answer please

Answers

Answered by ravitelecom
2

Answer:

ok 0 -0

Different well known effects of forces come into play as a result of the mutual

interaction of two entities. The manifold effects of forces include a change in the speed of

the object on which the force acts. E.g. if a ball is thrown vertically upwards, its speed

decreases. A ball rolling on ground comes to rest after sometime. When we push a ball, it

starts moving. If we push it harder, the speed of the ball increases .It turns out that the

energy associated with a moving object, goes up by a factor of four, when its speed doubles,

it goes up by a factor of nine, when the speed goes up by a factor of three and when it goes

up by a factor of sixteen the speed goes up by a factor of four. A force, acting on a surface

also exerts a pressure on it and this pressure is dependent on the area over which the force

acts perpendicularly. Also there is one special kind of force which, in general always tend to

slow down a moving object.

a) Give one example of a situation in which the force acting on a body slows down a moving

object without having any direct contact with that body.

b) By what factor will the energy of a moving object go up if its speed increases by a factor

of 5?

c) A given force ‘F’ is acting parallel to a long plane surface of area ‘A’. How much pressure

does this force exert on this plane surface?

d) Name the force that in general always tends to slow down a moving object and give one

example of i

Answered by Revathi5052277
1

Answer:

Hey there !!

Here we shall factorize

{a}^{3} - a \: = 0a

3

−a=0

we can write it as

a( {a}^{2} - 1) = 0 \: \: \: \: \: \: \: ( \: taking \: common)a(a

2

−1)=0(takingcommon)

then

we know a formula

{a}^{2} - {b}^{2} = (a + b)(a - b)a

2

−b

2

=(a+b)(a−b)

applying it to get ,

a(a + 1)(a - 1) = 0a(a+1)(a−1)=0

now we can find out its root

a = 0

a +1 = > a =-1

a -1 => a = 1

u can verify it by putting this value

Hope this helps u !!

Step-by-step explanation:

PleaSe mark my answer as brainliest

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