s. If it takes 1.026 x 10^-4 s for the bullet to pass throuhg the plastic, what average force impeded the bullets's motion through the plastic? please help
Force is change of momentum / time initial momentum of the bullet is Pi = 15*10^-3 kg*300 m/s final momentum is Pf = 15*10^-3 kg*90 m/s change of momentum ?P = 15*10^-3(300 - 90) = 3.15 kgm/s And F = ?P/t = 3.15 kgm/s / 1.026*10^-4 s F = 30701.75 kgm/s^2 (= N) OG
