PH-62

Friction and air resistance

Physics · Secondary 3 · Medium · Friction and air resistance

A 4.0 kg box is pushed along a rough floor by a horizontal force of 18 N. The frictional force opposing the motion is 6.0 N. Calculate the acceleration of the box.

$1.5\,\text{m s}^{-2}$
$2.0\,\text{m s}^{-2}$
$3.0\,\text{m s}^{-2}$
$4.5\,\text{m s}^{-2}$

Loading problem…