Answer:
3.5ft
Step-by-step explanation:
Answer:

Step-by-step explanation:
Let v be the speed after the collision of both the cars.
Now, momentum is given by: mass × velocity, then by equating the total momentum before and after the collision of the two cars, we get

⇒
⇒
⇒
Thus, they are moving at the velocity of 
Yes, it is.
(31√5) / √65=31√(5/65)
Answer: yes, it is.