Answer:
c) cubic centimetre is it's answer..
Hypothesis testing is basically testing the results of a experiment to see weather your results are valid or not.
Answer:
Acceleration will be 
Explanation:
We have given initial speed of the car is 70 km/hr
We know that 1 km = 1000 m
And 1 hour = 3600 sec
So 
It is given that car stops in 12 sec
So final speed of the car v = 0 m/sec
Time t = 12 sec
From first equation of motion v = u+at
So 
( negative sign indicates that speed of the car will constantly decrease )
550! OBVY! lol! ope this helps1