Final answer:
To find the magnitude of the average net force that acted on the bullet while it was in the barrel, you can use the formula F = m*a, where F is the force, m is the mass of the bullet, and a is the average acceleration of the bullet in the barrel.
Step-by-step explanation:
To find the magnitude of the average net force that acted on the bullet while it was in the barrel, we can use the formula F = m*a, where F is the force, m is the mass of the bullet, and a is the acceleration of the bullet in the barrel. Since the bullet is initially at rest and then accelerated to its final velocity, we can use the average acceleration over the time it takes for the bullet to leave the barrel. The magnitude of the average net force can be found by multiplying the mass of the bullet by the average acceleration.
To calculate the average acceleration, we can use the formula a = (v_f - v_i) / t, where a is the average acceleration, v_f is the final velocity of the bullet, v_i is the initial velocity of the bullet (which is 0 in this case), and t is the time it takes for the bullet to leave the barrel.
Once we have the average acceleration, we can multiply it by the mass of the bullet to find the magnitude of the average net force. Remember to use proper units for mass, velocity, and time, and check for any conversions that may be necessary.