
William W. answered 04/05/23
Experienced Tutor and Retired Engineer
First find the acceleration (a) using F = ma where F is the force (10 N) and m is the mass (20 kg). This will give you the acceleration in m/s2.
Then use the kinematic equation of motion:
vf2 = vi2 + 2ax where vf is the final velocity (8 m/s), vi is the initial velocity (0 m/s since it starts from rest), "a" is the acceleration you calculated above, and "x" is the distance you are trying to find (in meters). Solve for "x"