PH-1419

Resultant force and F = ma

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

A 1.5 kg block is pulled along a horizontal surface by a horizontal force of 9.0 N. The frictional force opposing the motion is 3.0 N. Using Newton’s second law, what is the acceleration of the block?

$2.0\,\text{m s}^{-2}$
$3.0\,\text{m s}^{-2}$
$4.0\,\text{m s}^{-2}$
$6.0\,\text{m s}^{-2}$

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