1. The problem statement, all variables and given/known data An 8.9 g bullet leaves a rifle's muzzle at 456.6 m/s. The barrel is 0.5 m long. What is the force exerted on the bullet as it travels the length of the barrel? Answer in N. 2. Relevant equations F = ma V = d/t (so T = d/v) a = v/t 3. The attempt at a solution I tried to do this: 1: T = d/v = 0.5 m / 456.6 m/s = 0.0011 s 2: A = v/t = 456.6 m/s / 0.0011 s = 416967.12 m/s^2 3: F = ma = 0.0089 kg * 416967.12 m/s^2 = 3711.0073 (kg∙m)/s^2 No love. Anyone see anything glaringly wrong?