PH-1382

Resultant force and F = ma

Physics · Secondary 4 · Medium · Resultant force and F = ma

A 4.0 kg trolley is pulled along a horizontal floor by a horizontal force of 18 N. The frictional force opposing the motion is 6.0 N. What is the acceleration of the trolley?

$1.5\,\text{m s}^{-2}$
$3.0\,\text{m s}^{-2}$
$4.5\,\text{m s}^{-2}$
$6.0\,\text{m s}^{-2}$

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