Newton's 2nd Law Problem
Hey everyone. I am new and I am trying to figure out this physics problem. Here is the question
A 12,000kg bus slows from 30 m/s to 10 m/s in 10 seconds. What is the net force acting on the bus?
I do not understand what it means to find the net force.
This is what I have discovered so far: (my teacher makes us use PIPES)
P: Fnet = ?
I: Mass of bus = 12,000 kg ; Vi = 30 m/s ; Vf = 10 m/s ; change in time = 10 seconds
P/E: Fg=mg ; Fg = Fn
S: Fg = 12000 kg (9.8 N/kg) Fg = 117600 N
Fn = Fg Fn = 117600 N
I know that Fg is my gravitational force and Fn is my normal force, but I don't know what it means to find the net force acting on the bus.
Any advice?
