Question

adjust the applied force until the speed is constant at 10 m/s. if the speed changes at all, keep adjusting! a what is the applied force? select b what is the friction force? select c what is the net force? select

Explanation:

Step1: Analyze motion condition

When the speed is constant, the object is in equilibrium. According to Newton's first - law, the net force on the object is zero.

Step2: Determine net force

Since the object is moving at a constant speed, the net force $F_{net}=0$.

Step3: Relate applied force and friction force

The applied force $F_{applied}$ and the friction force $F_{friction}$ are the only horizontal forces acting on the object. In equilibrium, $F_{applied}=F_{friction}$. But without information about the mass, coefficient of friction etc., we can only state the relationships based on the equilibrium condition.

Answer:

A. Equal to the friction force
B. Equal to the applied force
C. 0