PH-1416

Resultant force and F = ma

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

A car of mass 800 kg increases its speed uniformly from 10 m/s to 18 m/s in 4.0 s.

Using Newton’s second law and the definition of acceleration, what is the resultant force acting on the car?

$1.6 \times 10^3\,\text{N}$
$8.0 \times 10^2\,\text{N}$
$3.2 \times 10^3\,\text{N}$
$4.0 \times 10^2\,\text{N}$

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