C.figure 3 is the answer had the same and got is right
Answer:
The answer is given below
Explanation:
u is the initial velocity, v is the final velocity. Given that:

a)
The final velocity of cart 1 after collision is given as:

The final velocity of cart 2 after collision is given as:

b) Using the law of conservation of energy:

Because some scientific theories are true and some are false
The marbles that are 'more energetic' fall out of the tray, in the same way particles have enough energy to escape and turn into a gas.