1. The problem statement, all variables and given/known data 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 five seconds. c. Calculate the new acceleration if the student stops pushing he brick after 5 seconds. d. How long does it take the brick to stop? 2. Relevant equations a=Fnet/m (I think?) 3. 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?