Answer: 
Step-by-step explanation:
1. You know that the force acting on the object varies directly with the object's acceleration. Then, by definition, you have:

Where
is the force acting on the object,
is the object's acceleration and
is the constant of proportionality.
2. Keeping this on mind, you can calculate the constant of proportionality by substituting
and
into the equation and solving for
:

3. Now, you can calculate the force when the acceleration of the object becomes 5 m/s², as following:

3. The result is:

She walks 6/5 of a mile in 1 hour
So, she walks 1.2 miles per hour
Answer: 12.5%
Step-by-step explanation:
80x 12.5%=10
80+10=90
Answer:
2.52
Step-by-step explanation: