back to scholl

Back in my school days, i
was sitting
in class one day and the
walked in. i decided to
jog with his mind and
asked him;
“How do you put an
elephant in the fridge?”
Teacher: I don’t know,
Me: You open the door
and put it in there!
Teacher: Oh! ok.
Me: How do you put a
donkey in the fridge?
Teacher: Ohh I
know this one, you open
door and put it in there,
Me: No, you open the
take the elephant out,
then you
put it in there.”
Teacher: (looking
Me: Let’s say all the
animals went to
the lion’s birthday party,
except one
animal, which one wud
it be?
Teacher: (a bit confused,
rolling eyes)….
The lion…..?
Me: No,the
donkey because it’s still
Teacher: u must be
Me: One last more
question, If there is a
river, en u know exactly
u usually see
it full of
crocodiles and you
wanted to
across it, how would
Teacher: You see, in this
case, there is no
other option, you would
to use the
Me: Lol, mscheww.. Sir,
swim across because all
crocodiles are at the
Sir, u can now do
what u came
here to do.
Teacher: Let’s call it a

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laws of physics

Work, Energy and Power
Work Done by a force is defined as the product of
the force and displacement (of its point of
application) in the direction of the force
W = F s cos θ
Negative work is said to be done by F if x or its
compo. is anti-parallel to F
If a variable force F produces a displacement in the
direction of F, the work done is determined from the
area under F-x graph. {May need to find area by
“counting the squares”. }
By Principle of Conservation of Energy,
Work Done on a system = KE gain + GPE gain +
Work done against friction}
Consider a rigid object of mass m that is initially at
rest. To accelerate it uniformly to a speed v, a
constant net force F is exerted on it, parallel to its
motion over a displacement s.
Since F is constant, acceleration is constant,
Therefore, using the equation:
v2 = u2 +2as,
as = 12 (v2 – u2)
Since kinetic energy is equal to the work done on the
mass to bring it from rest to a speed v,
The kinetic energy, EK = Work done by the force F
= Fs
= mas
= ½ m (v2 – u2)
Gravitational potential energy: this arises in a
system of masses where there are attractive
gravitational forces between them. The gravitational
potential energy of an object is the energy it
possesses by virtue of its position in a gravitational
Elastic potential energy: this arises in a system of
atoms where there are either attractive or repulsive
short-range inter-atomic forces between them.
Electric potential energy: this arises in a system of
charges where there are either attractive or repulsive
electric forces between them.
The potential energy, U, of a body in a force field
{whether gravitational or electric field} is related to
the force F it experiences by:
F = – dU / dx.
Consider an object of mass m being lifted vertically
by a force F, without acceleration, from a certain
height h 1 to a height h2. Since the object moves up
a constant speed, F is equal to mg.
The change in potential energy of the mass = Work
done by the force F
= F s
= F h
= m g h
Efficiency: The ratio of (useful) output energy of a
machine to the input energy.
Useful Output
Energy x100%
Useful Output
Power x100%
Input Energy Input Power
Power {instantaneous} is defined as the work done
per unit time.
Total Work
Done =W
Total Time t
Since work done W = F x s,
P = F x s = Fv t
for object moving at const speed: F = Total resistive
force {equilibrium condition}
for object beginning to accelerate: F = Total resistive
force + ma

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Metaphor Examples

The definition of a metaphor is “a figure of speech containing an implied comparison, in which a word or phrase ordinarily and primarily used of one thing is applied to another (Ex.: the curtain of night, “all the world’s a stage”).”

There are two types of metaphors:

a simile, where two unlike things are compared followed by a figurative example.
an analogy, where a literal comparison is made between two things.
Both types of metaphors typically use the word like or as followed by the comparison. If this is confusing, take a look at some of these metaphor examples to get a better understanding of exactly what a metaphor is.

Metaphor: Situation vs. the Real Thing
You may have often heard expressions such as “he drowned in a sea of grief” or “she is fishing in troubled waters,” or “success is a bastard as it has many fathers, and failure is an orphan, with no takers.” All these expressions have one thing in common: a situation is compared to a real thing, although the situation is not actually that particular thing.

Sea of grief – How and where does one come across a sea that is filled not with water, but with grief?
Fishing – It is not used to mean that the person is actually fishing; it is an expression which is used to signify that the person is looking for something that is difficult to obtain.
Success is a sense of achievement, it is not an illegitimate child! – The saying is used to reinforce the age-old belief that everyone wants to take credit for something that became a success, either by fluke or by conscious effort. On the other hand, no matter how much effort or creativity may have gone into an enterprise, the moment it is considered a failure, no one wants to take responsibility for it, much like an abandoned infant.
Broken heart – Your heart is not literally broken into pieces; you just feel hurt and sad.
The light of my life – The person described by this metaphor isn’t really providing physical light. He or she is just someone who brings happiness or joy.
It’s raining men – Men do not literally pour from the sky; there are simply an abundance of male suitors around at the time.
Time is a thief – Time isn’t really stealing anything, this metaphor just indicates that time passes quickly and our lives pass us by.
He is the apple of my eye – There is, of course, no real apple in a person’s eye. The “apple” is someone beloved and held dear.
Bubbly personality – A bubbly personality doesn’t mean a person is bubbling over with anything, just that the person is cheerful.
Feel blue – No one actually ever feels like the color blue, although many people say they are “feeling blue” to mean they are feeling sad.
Fade off to sleep – You don’t actually fade, you simply go to sleep.
Inflamed your temper – The news inflamed your temper is not a situation where there is any actual fire or flames, it is just a situation where someone gets mad.
Reeks of infidelty – When said about a cheating partner, this doesn’t actually mean that there is a literal smell. Instead, it is just apparent that the person is cheating.
Rollercoaster of emotions – A rollercoaster of emotions doesn’t exist anywhere, so when people are on a rollercoaster of emotions, they are simply experiencing lots of ups and downs.
Stench of failure – The stench of failure is strong, according to the common metaphor, but of course failing doesn’t really smell.
All of these expressions are examples of metaphors which are also similies. They are juxtaposing an actual (literal) thing and a figurative thing in order to give more meaning to the figurative concept. To use the above examples, the literal expression in the phrase is “sea,” while “grief” is the figurative item.

An example of a metaphor that is an analogy would be so say “The house looked like it was designed in the 1940s.”

For metaphors that kids might enjoy, check out Metaphor Examples for Kids.

Purpose of Metaphors
Expressions are used to give effect to a statement. Imagine how bland a statement such as “he was sad” is, compared to a statement describing a “sea of grief.” The metaphor is sure to give the reader a better idea of the depths of grief in this situation.

Similarly, who would really spend time thinking of the vast differences between success and failure if the metaphor was missing, and the statement was just “Everyone wants to be successful, no one wants to be a failure?” That statement would be a failure itself, in inspiring interest in the conversation!

Metaphors are meant to create an impact in the minds of readers. Other kinds of expressions that belong to this genre are:

analogies, which are literal comparisons
hyperboles, which are exaggerations
antitheses, which use contrasts to prove a point
The aim of all these literary tools is to convey a thought more forcefully than a plain statement would.


This, in essence, is what metaphors are about. They are exaggerated expressions no doubt, but they are exaggerated because they are supposed to paint a vivid picture, or become a profound statement or saying.

Do you have a good example to share? Add your example here.
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