Question

Neglecting air resistance, how long shall it take an object in free fall to have a velocity of 5.0 m/s?

Answer 1

Solution.

$v_0=0 m/s;$

$v=5.0 m/s;$

$g=9.8 m/s^2;$

$v=v_0+gt\implies t=\dfrac{v-v_0}{g};$

$t=\dfrac{5.0-0}{9.8}=0.5s;$

Answer: $t=0.5 s.$