Question

A worker pushes a 22.0 kg barrel, giving it an initial velocity of 6.8 m/s. Calculate the displacement of the barrel before it stops if the force of friction acting on the barrel is 36 N.​

Answer 1

14 m

Step-by-step explanation:

The force of friction has to do work equal to the barrel's kinetic energy for the barrel to stop.

work = f * d and KE = 1/2 mv^2

36 N * d = 1/2 (22 kg)(6.8 m/s^2)

d=~ 14 meters