Question

A runner can accelerate at a rate of 6m/s2. If they accelerate for 2 seconds, how fast will they be running?

Answer 1

ANSWER
$12m {s}^{ - 1}$

EXPLANATION

The acceleration of the runner is given by,
$acceleration = \frac{velocity}{time }$

If the runner accelerates at the rate of

$6m {s}^{2}$

for 2 seconds, then,


$6 = \frac{velocity}{2}$



We multiply through by 2 to get,


$12 = velocity$



Therefore the runner is moving at a velocity of
$12 \: m {s}^{ - 1}$