PH-1489

Newton’s laws of motion

Physics · Secondary 4 · Medium · Newton’s laws of motion

A 3.0 kg block is pushed along a horizontal floor with a constant force of 12 N. The frictional force on the block is 4.0 N. Using Newton’s second law, what is the acceleration of the block?

$1.3\,\text{m s}^{-2}$
$2.0\,\text{m s}^{-2}$
$2.7\,\text{m s}^{-2}$
$4.0\,\text{m s}^{-2}$

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