A good scientific question should be pre-determined and also have a meaning or relation to science.
Answer:
a
Explanation:
the other answers wouldnt help
Humans,trees,plants hope it helps
Answer:
0.13 m/s
Explanation:
= Mass of first car = 140000 kg
= Mass of second car = 95000 kg
= Initial Velocity of first car = 0.3 m/s
= Initial Velocity of second car = -0.12 m/s
= Velocity of combined mass
For elastic collision

Their final velocity is 0.13 m/s