Which of the following is considered a physical change?
2 answers:
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Answer:
C.
Explanation:
The acceleration of an object can be found using the equation:
where
v is the final velocity
u is the initial velocity
t is the time it takes for the velocity to change from u to v
In this problem:
u = 30 m/s is the initial velocity of Angelica
v = 84 m/s is the final velocity
t is the time
Substituting into the equation, we find the acceleration:
Answer:
The SI units of A, B and C are :
Explanation:
The position x, in meters, of an object is given by the equation:
Where
t is time in seconds
We know that the unit of x is meters, such that the units of A, Bt and must be meters. So,
So, the SI units of A, B and C are :
So, the correct option is (B).