A motorcycle and rider have a total mass equal to 375 kg. The rider applies the brakes, causing the motorcycle to accelerate at a rate of −6 m/s2.
What is the net force on the motorcycle? (Indicate the direction with the sign of your answer.)
Force = Mass* acceleration
Mass = 375 kg .
Acceleration = -6m/s2
Force = - 375*6 N = - 2250 N
Negative sign means the force is acting against the direction of motion of motor cycle.