Answer:
Mutations do not necessarily always have to be bad, sometimes plants or animals mutate with something helpful to the situation they are in.
The main difference is direction. C.
Speed is a scalar quantity, while Velocity is a vector quantity.
Speed is measured without taking into fact direction, but Velocity takes into fact the direction.
Answer:2
Explanation:
Given

and
and
are the acceleration of 1 and 2
Suppose T is the Tension
then for block 2


For block 1


equate 1 and 2


where 
thus we can see that a is less than g
therefore 