Question

find the distance that runs through the mobile after 4 s, if part of the rest ​

Answer 1

As the mobile starts from rest, its initial speed is zero and the final speed needs to be found in order to calculate the distance traveled.

Using the following formula

$vf = vi + at$

$vf = 0 + (2)(4)$

$vf = 8$

The distance is calculated by the following formula

$d = ( \frac{vf + vi}{2} ) \times (time)$

$d = ( \frac{8 + 0}{2} ) \times (4)$

$d = 16m$

Regards.