PH-1507

Resultant force and F = ma

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

A 2.0 kg trolley is pulled along a rough horizontal surface by a horizontal force of 8.0 N. The frictional force opposing the motion is 3.0 N. What is the acceleration of the trolley?

$0.40\,\text{m/s}^2$
$1.5\,\text{m/s}^2$
$2.5\,\text{m/s}^2$
$4.0\,\text{m/s}^2$

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