Diagram above shows two trolleys each of mass 1 kg, before and after collision. The initial velocity of trolley A and trolley b are 6 ms-1 and 4 ms-1 espectively. After collision, both trolleys move together.
Rajah di atas menunjukkan dua buah troli dengan jisim 1 kg setiap satu, sebelum dan selepas perlanggaran. halaju awal troli A dan troli b masing-masing adalah 6 ms-1 dan 4 ms-1 Selapas perlanggaran, kedua-dua troli bergerak bersama-sama.
What is the velocity of both trolleys after collisions?
Berapakah halaju kedua-dua troli selepas perlanggaran?
A. 1.0 ms-1
B. 2.0 ms-1
C. 5.0 ms-1
D. 10.0 ms-1
_________________________________________________________
Answer
C
inelastic collision
(1 kg)(6ms-1) + (1kg)(4ms-1) = (1 kg +1 kg) v
v = 5.0 ms-1