Physics, asked by Raazp235, 4 months ago

A bus decreases it's speed from 80km h –1 to 50 km h–1 in 4 s . Find the Acceleration of the bus.​

Answers

Answered by neha42476
1

Answer:

Hence, the acceleration of the bus is -2.0834 m/s²

Explanation:

please mark me brilliant ❤️

Answered by thebrainlykapil
327

\large\underline{ \underline{ \sf \maltese{ \: Question:- }}}

  • A bus decreases it's speed from 80km h –1 to 50 km h–1 in 4 s . Find the Acceleration of the bus.

\red{\boxed{ \sf \blue{ Calculate \: the \: Acceleration \: ? }}}

━━━━━━━━━━━━━━━━━━━━━━━━━

\large\underline{ \underline{ \sf \maltese{ \: Solution:- }}}

  • First convert km h to m s

Intial Velocity ( u ) = 80 km h–¹

\qquad \quad {:} \longrightarrow \sf{\sf{ 80 \times \frac{5}{18}   }}

\qquad\quad {:} \longrightarrow \underline \red{\boxed{\sf{Intial \: Velocity \:  = \: \frac{200}{9}  m \: s^{ - 1}    }}}

━━━━━━━━━━━━━━━━━━━━━━━━━

Final Velocity ( v ) = 50 km h–¹

\qquad \quad {:} \longrightarrow \sf{\sf{ 50 \times \frac{5}{18}   }}

\qquad\quad {:} \longrightarrow \underline \red{\boxed{\sf{Final \: Velocity \:  = \: \frac{125}{9}  m \: s^{ - 1}    }}}

\purple{\fbox\green{Time \: = \: 4s}}

━━━━━━━━━━━━━━━━━━━━━━━━━

\begin{gathered}\begin{gathered}\begin{gathered}: \implies \underline\blue{ \boxed{\displaystyle \sf \bold\orange{\:v \: = \: u \: + \: at} }} \\ \\\end{gathered}\end{gathered}\end{gathered}

\qquad \quad {:} \longrightarrow \sf{\sf{\frac{125 \: - \: 200}{9\: × \: 4}   }}

 {:} \longrightarrow \underline\red{\boxed{\sf{Acceleration \: = \: {-2.083}m \: s^{ - 2}}}}

━━━━━━━━━━━━━━━━━━━━━━━━━

\begin{gathered}\begin{gathered}\qquad \therefore\: \sf{ Acceleration \: = \underline {\underline{ {-2.083}m \: s^{ - 2}   }}}\\\end{gathered}\end{gathered}

━━━━━━━━━━━━━━━━━━━━━━━━━

Similar questions