Physics

Problem

0.40\,\text{kg}

glider moves along a track so that its momentum is given by

p_x(t)=6.0t-4.0

(in kg·m/s, with

t

in seconds) for

0\le t\le 5\,\text{s}

. Determine the net external force acting on the glider and specify its direction along the x-axis.