Question

7. A toy car is at rest, and a force of 80 N is applied to it. If the frictional
force acting on the car is 80 N, determine the magnitude and direction of
the resultant force? *​

Answer 1

Answer:

Let a be the acceleration of the box.  

The equation of motion of the box, ma=F−f    (as friction force always opposite to applied force)

or 40a=80−60

or a=20/40=0.5m/s^2  

Explanation: