Calculating Acceleration and Net Force of a Moving Block | Homework Question

[physicshard22]

Homework Statement

A block of mass 8.0kg starting from rest is pulled along a rough horizontal tabletop by a constant force of 2N it is found that the block moves a distance of 3.0m in 6 seconds
a) what is the acceleration?
b) What is the net force acting on the block?

Homework Equations

Fnet = Ma

The Attempt at a Solution

v = d/t
v = 3/6
v = 0.5m/s
a = v/t
a = 0.08m/s^2
Fnet = 8 x 0.08
= 0.64N [F]

 

[Delphi51]

You can't use v = d/t when the motion is accelerated.
Use formulas with acceleration in them.
d = Vi*t + .5*a*t² should work well.