A student exerts a 30 N[E] force to push a 5 kg brick along a floor that exerts a 20 N[W] friction force.
Consider all forces.
a. Calculate the acceleration.
b. If the force is exerted for 5 seconds, calculate the velocity at the end of the
c. Calculate the new acceleration if the student stops pushing he brick after 5
d. How long does it take the brick to stop?
a=Fnet/m (I think?)
The Attempt at a Solution
a = 30N(E) / 5kg = 6m/s
But it states consider all forces. How do I consider the friction force into this?