Question

Someone please help me explain it step-by-step and how to

Answer 1

Given that the initial velocity is

`\begin{gathered} V_f=\text{ 2.7 km/h} \\ =2.7*\frac{1000m}{60\text{ }*60\text{ seconds}} \\ =2.7*(10)/(36)(m)/(s) \\ =2.7*(5)/(18) \\ =0.75\text{ m/s} \end{gathered}`

The acceleration is a = 0.4 m/s^2.

The time is t = 3.6 s.

We have to find the final velocity.

The formula to find the final velocity is

`V_f=V_o+at`

Substituting the values,

`\begin{gathered} V_f=0.75+0.4*3.6 \\ =2.19\text{ m/s} \end{gathered}`

Thus, the final velocity is 2.19 m/s.