Question

Use the formulav = u+at to find the velocity

Answer 1

Answer:

The final velocity is 13.5 m/s.

Step-by-step explanation:

Given :

• $\red\diamond$ Initial velocity = 3 m/s
• $\red\diamond$ Acceleration = 1.5 m/s²
• $\red\diamond$ Time = 7 seconds

$\begin{gathered}\end{gathered}$

To Find :

• $\red\diamond$ Final Velocity

$\begin{gathered}\end{gathered}$

Using Formula :

${\star{\underline{\boxed{\sf{\pink{v = u + at}}}}}}$

• $\blue\star$ v = final velocity
• $\blue\star$ u = initial velocity
• $\blue\star$ a = acceleration
• $\blue\star$ t = time taken

$\begin{gathered}\end{gathered}$

Solution :

Substituting all the given values in the formula to find Final velocity :

$\begin{gathered}\begin{array}{l} {\longrightarrow{\tt{v = u + at}}} \\ \\ {\longrightarrow{\tt{v = 3 + 1.5 \times 7}}} \\ \\ {\longrightarrow{\tt{v = 3 + \dfrac{15}{10} \times 7}}} \\ \\ {\longrightarrow{\tt{v = 3 + \dfrac{15 \times 7}{10}}}} \\ \\ {\longrightarrow{\tt{v = 3 + \dfrac{105}{10}}}} \\ \\ {\longrightarrow{\tt{v = 3 + 10.5}}} \\ \\ {\longrightarrow{\tt{v =13.5 \: m/s}}} \\ \\ {\star{\underline{\boxed{\tt{\purple{v =13.5 \: m/s}}}}}} \end{array}\end{gathered}$

Hence, the final velocity is 13.5 m/s.

$\rule{300}{2.5}$

Answer 2

The final velocity is 13.5m/s

The formula of velocity is given as:

$v =u + at$

And the parameters are given as:

• the initial velocity, u = 3 m/s
• the acceleration, a = 1.5 m/s²
• the time, t = 7 seconds

So, we have:

$v =3 + 1.5 \times 7$

$v =3 + 10.5$

$v =13.5$

Hence, the final velocity is 13.5m/s

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