Unbalanced force review -1

If a car has a force of 54 N forwards and the brakes have a force of 73 N backwards, what is the overall Net Force.

• 16 backwards

• 19 backwards

• 18 backwords

• 23 forwards

What is the resultant/ net force?

• 400 N Up

• 400 N Down

• 800 N Down

The acceleration of an object is ____________________ related to the net force exerted upon it

• Directly

• Indirectly

A 3 kg chihuahua becomes tired on a walk and decides to stop walking. The owner drags the dog to the right with a force of 4 N, and the dog experiences 2 N of frictional force. Draw a QUANTITATIVE Free Body Diagram for the chihuahua.

Object C has a mass of 5 kg. Choose the net force equation for the axis where the forces are unbalanced to solve for the acceleration.

• 40 + 10 = 5a

• 40 - 10 = 5a

• 5 = a

• 50 - 50 = 5a

What is the object's net force?

• 30 N, right

• 15 N, left

• 15 N, right

• 15 N, left

If the object is accelerating at 3 m/s/s, what is the object's mass?

• 3 kg

• 15 kg

• 30 kg

• 5 kg

Referencing the force diagram, which of the following horizontal equations best shows Newton's 2nd law for the object?   

• Fapp + Ffric = ma

• Fapp + (- Ffric) = ma

• Ffric = ma

• Fapp = ma

If object f has a mass of 8 kg, what is its acceleration?   

• 16 m/s/s

• 8 m/s/s

• 2 m/s/s

• 32 m/s/s

A 74 kg person experiences a -2.2 m/s/s acceleration. What must the net force be acting on the person?