Uta & Alber [EN]
29. The Analogies

POV Author

Bargaining for Alber to cancel the tutoring of tutoring Uta, failed miserably. All the reasons and the way Uta did so that she did not need tutoring with the man, it felt all mental. He was forced to accept Alber as his physics tutor, because the man said he would go to Uta's house every day after school, to teach the girl physics, if she refused his reward at school.

Hearing that, inevitably Uta finally agreed to learn guided Alber, the tutor reliable every hour of rest. And this is where Uta is now, the girl has to deal with a collection of questions and scribbles. After this Alber ordered Uta to eat lunch quickly, because the rest of the time will be used to study.

Like a commander and a soldier, whatever the commander instructs, the soldier cannot argue. Alber discussed the replay yesterday, because the possibility of remedial later also about this problem.

"Before entering the calculation with a formula, we must first know the core concepts we discuss. Okay?" Say Alber as their tutoring preface.

"okay." Reply Uta pasrah.

"First we talk about momentum. Momentum in the concept of physics is defined, any object that has mass (m) moves at speed (v), eating that object is said to have momentum (P \= m.v)." Alber said, choosing the definition of momentum that would be easiest to understand.

Uta looked totally blank, as if Alber spoke an alien language, so that none of Uta understood from that word. Alber took a deep breath, before trying to explain once more.

"For example, the ball is rolling, the ball has mass or weight, when the ball moves he has speed. So, the ball that rolls earlier, is said to have momentum. Until here get it?" Alber tried to explain, using an analogy often found in everyday life.

"understand." The girl replied confidently, complete with a grim expression that appeared on her face. He seemed to understand and could capture the simple analogy that Alber conveyed. Missing was the empty expression Alber had just seen.

He is the analogy type.*Albers

"Goodle. Now we move on to the impulse." Praise Alber to the girl with a slight chuckle. At least step one has been successfully passed, continue to the next step.

"Impulse is simply, the cause of momentum. To make the ball move roll, you must first be given force. There are two ways to find impulses. Let's go first, ready?" Obviously Alber slowly, by still using the theory plus a simple analogy, so that the girl is not confused.

"Ready." Uta said, indicating he was still on the track.

"Now there was a shadow, there was a beginning and there was an end. Take the ball example. At first the ball is still, then after being kicked, the ball finally moves. Can you imagine the beginning and end of the ball? Don't you think you're being??" Alber's words lead Uta into the fantasy phase, to be able to understand the core of the real theory.

"Here is dear." Uta answered with a face mimic, imagining the analogy Alber gave. Alber tried to stay focused even though he was eager to laugh, looking at Uta's expression which he thought was very funny at the moment.

"Well the beginning of the ball is V1, while the end of the ball is V2. Must remember that, okay!!" Re-explaining theories and analogies go hand in hand.

"V1 V2V. Okay." Okay." As Alber expected, this method is one hundred percent effective into the brain Uta.

"Well find the first impulse, the initial condition of the ball is still, or V1 is zero (0). So the formula used, the impulse equals the force times delta t (I \= F . ∆t). Which delta t is, the time it takes when the force is right about the object." Alber was slow. He saw that Uta who frowned was digesting the word Alber.

"What's like a football player who wants to take a penalty kick?" Without Alber guessing, Uta spoke to give an analogy of the results of his thinking.

"Yes smart. Exactly it. The ball player who wants to do the penalty kick is right, kick the ball that the condition of the ball is silent. Well the time delta (∆t) is, the time needed when the player starts kicking the ball, until his feet actually hit the ball that was silent earlier. Very smart" Alber was very happy, it turned out Uta was the type who quickly caught the lesson, as long as the delivery method was right.

"He . he .. he." The girl chuckles at Alber praising her.

"Continue the second way?" Ask Alber. Uta nodded in agreement.

"For the second way, Impulse equals momentum change (I\=∆P). Delta p (∆P) can be obtained from, the final speed condition of the ball, minus the initial speed condition of the ball (mV2 - mV1). Often used for the condition of the ball that is already moving." The conditions of the les were already very conducive. Alber realized Uta was already very concentrated, every time he explained step by step.

"Like a ball player who again passes the pass kicking the ball?" Said the girl again relaying her analogy, making Alber happy as if he had hit the jackpot.

"Cinggo. Exactly, the ball that is passed is often initially rolled, so you can use this formula. Okay?" Said Alber with a big smile.

"Well, both momentum and impulse are included in vector quantities, so both have values and directions, which is very influential." Clearly Alber is more about momentum and impulse.

"Value, the direction it means?" Back his brows furrowed questioning Alber's explanation intent.

"Reliance here means a positive negative value, whose function determines the direction. If the value is positive then, the direction of the object to the right. Conversely, if the value is negative, then the direction of the object to the left." Uta is still loading, digesting the word Alber.

"gini analogues. Usually the good is denoted right, while the left is denoted the opposite. Now just imagine, if we do good to people means the same we do things that are positive. Positive means right. Conversely, if we mess with people, it's the same way we do negative things to people or to the left, right??" Alber was proud to find an analogy that was easy to digest.

"Yes we have to be good with people." Again the expression appeared.

"He . he. Good girl ..." Alber could not help but laugh at Uta's words.

"Okay now we're getting into an example. Focus Ta!!! A car with a mass of 1200 kg, drove at a speed of 60 m/s, then hit a pole, so it stopped within 0.1 seconds. What is the force that goes on in the car?" Alber read one of the questions, on a physics replay yesterday.

"Astagfirefullah!!! How can you not see the pole?? Other passengers should tell the driver carefully. Thank goodness the pole that was hit, try if hit by someone else, can go to jail. It's a fix, the answer is mostly style." Uta Uta.

THE HUT..!!!!

Alber was at a loss for words, with Uta's amazing mindset just now.

Connect ............

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BTW made his physical explanation, honestly Author is also not good at all, classified as weak even. The author summarizes some references, both from Om Gugel and from Yutub. Author try rangkumin with explanation as simple as Author can.

Easy to summarize the author is not wrong, wrong and misguided yes. Even if something is not right, friends can really write corrections in the comment. The author is happy to thank you.😊

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