I dont think it can be solved as time is not mentioned
Answer:
Car A has twice the energy of car B.
Explanation:
The kinetic energy of an object is given by :

Where
m is the mass
v is the speed of the object
Car A has twice the mass of Car B. Both travel at the same speed i.e.

So,

So, the kinetic energy of car A is twice of the kinetic energy of car B.
Answer:
12 cm
Explanation:
From what I got with my answer (8.192 cm) I went ahead and rounded it to the closest answer which is 12 cm. Hopefully im correct but if not, I apologize in advance.
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