Answer:
Explanation:
The system of equation is the following:
We can solve the system by expliciting C from the second equation. We get:
And if we know substitute C into the first equation, we find
And by substituting D into the second equation, we find
Answer: Frictional force is when it happens on purpose and normal force is when it happens normal and you are not trying to make it happen on purpose.
Explanation: friction happens on purpose and sometimes you can't control friction but friction is an important thing.
Acceleration is constant in free fall. So it would again be 9.8 m/s².
Answer:
a pulley
Explanation:
a pulley is a machine used to make work easier. it is essentially used to make lifting things easier. an example of a pulley is an elevator
Answer:
Since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.
Explanation