Rajah di bawah menunjukkan satu peluru ditembak ke arah blok kayu yang pegun. Kemudian, blok dan peluru yang terbenam bergerak dari Y ke Z.
Which of the statement below is correct?
Di antara penyataan di bawah, manakah yang benar?
A Kinetik energy at X = Kinetic energy at Y after the collision
Tenaga kinetik di X = tenaga kinetik di Y selepas perlanggaran
B The collision between the bullet and the wooden block is elastic
Perlanggaran antara peluru dengan blok kayu adalah kenyal
C Total energy at Y after the collision = Total energy at Z
Jumlah tenaga di Y selepas perlanggaran = jumlah tenaga di Z
D Total energy at Z = kinetic energy at X
Jumlah tenaga di Z = tenaga kinetik di X
In physics, the principle of conservation of momentum states that when you have an isolated system with no external forces, the initial total momentum of objects before a collision equals the final total momentum of the objects after the collision
Answer : C