Question

A girl walks 0.3 m/s. She moves 0.8 m/s 5 s later.

Answer 1

Answer:

a = 0.1 [m/s²]

Explanation:

To solve this problem we must use the following equation of kinematics.

$v_{f}=v_{o}+a*t$

Vf = final velocity = 0.8 [m/s]

Vo = initial velocity = 0.3 [m/s]

a = acceleration [m/s²]

t =  time = 5 [s]

$0.8=0.3+a*t\\0.5 = 5*a\\a = 0.1 [m/s^{2}]$