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Sabtu, 22 September 2012

soal tumbukan part 2


Ketika suatu partikel mengalami tumbukan elastik dengan partikel lain yang diam, fraksi energi kinetik terbesar akan dipindahkan jika:
Choose one answer.

a . partikel datang dan partikel target memiliki massa yang sama
b . partikel datang bergerak dengan sangat lambat
c . partikel datang bergerak dengan sangat cepat
d . partikel datang jauh lebih berat daripada partikel target
e . partikel target jauh lebih berat daripada partikel datang

D Incorrect
A CORRECT

Three satellites are launched into space connected together. Once in deep space, an explosive charge separates the three satellites and they move apart. The satellites each have different masses with m1 < m2 < m3. Which of the following statements is always true? Choose one answer. 

 a . Although one or more of the above statements could be true in special cases, they are not always true.  b . The one with mass m1 receives the greatest impulse.  c . The one with mass m3 receives the greatest impulse.  d . All of the above statements are always false.  e . The all must receive equal impulses. 

a Correct 



Kapan pun benda menumbuk benda diam yang bermassa sama:  Choose one answer. 

 a . momentum tidak kekal   b . benda pertama harus berhenti   c . tumbukan yang terjadi elastic   d . keempat pilihan lain salah   e . dua benda tidak dapat menempel bersama 

a correct

Kaitlin uses a bat to hit a thrown baseball. She knocks the ball back in the direction from which it came in a partially inelastic collision. The bat, which is heavier than the baseball, continues to move in the same direction after the hit as Kaitlin "follows through." Is the ball moving faster before or after it was hit?
Choose one answer.

a . There is insufficient information to answer this problem.
b . The ball was moving faster before it was hit.
c . The ball was moving at essentially the same speed before and after the hit.
d . The ball was moving faster after it was hit.
e . Not enough information is given to be able to say.
  E Incorrect
a correct
Ketika Anda menginjak pedal gas untuk menambah kecepatan mobil, gaya yang mempercepat mobil adalah: Choose one answer.

a . bukan jawaban di atas b . gaya dari mesin c . gaya kaki pada pedal gas d . gaya gesek antara ban dan jalan e . gaya normal jalan pada ban

a B e Incorrect



When a collision is perfectly inelastic, then:  Choose one answer. 

 a . all the kinetic energy is gone.   b . both choices A and C are valid.   c . all the kinetic energy is conserved.   d . the participants stick together.   e . the total momentum is zero.  c Incorrect 


In a system with two moving objects, when a collision occurs between the objects:  Choose one answer. 

 a . none of the above choices are valid.   b . the total momentum is always conserved.   c . the total kinetic energy is always conserved.   d . the total kinetic energy and total momentum are always conserved.   e . neither the kinetic energy nor the momentum is conserved. 
c Correct 


Momentum dapat dinyatakan dalam:  Choose one answer. 

 a . gram.s   b . N.s   c . kg/(m.s)   d . kg/m   e . N/s  b Correct 

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