Which of the following is a question of value? a.
“What are the causes of autism?”
b.
“Is human cloning ethical?”
c.
“How does a car engine work?”
d.
“Should the drinking age be changed?”

b.  “Is human cloning ethical?”

Explanation:

Questions of value are asked in relation to their relative morality or ethical status.

The subject of the question is being put to the respondent in terms of whether the values they hold dear believe the subject is good or bad, ethical or unethical or simply moral or immoral.

Option B asks if Human cloning is ethical which makes it a question of value as it is asking about the ethical status of human cloning.

ek = (m·v2) / 2

v - velocity of system after the collision

m = m1 + m2

ek = (m1 + m2) ·v2/2

ek = (200 + 250) ·2,32/2 = 450·5,29/2 = 1190,25 j

see below  

explanation:

all of the above