A 41-kg box is thrown at a speed of 235 m/s and is brought to a halt in a collision that lasts for a time of 6.8 ms. What is the magnitude of the average net force that acts on the box during the collision?
Sum of Forces = m*a
The Attempt at a Solution
Well I tried t=6.8, v(o) = 235 m/s, v = 0, , and tried to solve for acceleration, which i got -34.56. but putting that in the sum of forces = m*a is not giving me the correct solution. i suck at physics :(