Respuesta :

Question :-

  • A car starts from rest and accelerates at 2.5m/s² for 2s. What is the final velocity of the car?

Required Solution :-

  • The final velocity of the car is 5 m/s

Provided that :-

  • Acceleration, a = 2.5m/s²
  • Time taken, t = 2 sec
  • Initial velocity, u = 0 m/s (As car started from rest)

To Calculate :-

  • The final velocity of the car

Required Equations of Motion :-

[tex]\begin{gathered}\boxed{\begin{array}{c}\\ {\pmb{\sf{Three \: equation \: of \: motion}}} \\ \\ \sf \star \: v \: = u \: + at \\ \\ \sf \star \: s \: = ut + \: \dfrac{1}{2} \: at^2 \\ \\ \sf \star \: v^2 - u^2 \: = 2as\end{array}}\end{gathered}[/tex]

Calculation :-

[tex]\pink{\qquad \pmb{ \sf\longrightarrow v \: = u \: + at}}[/tex]

[tex] \qquad \pmb{\sf \longrightarrow v = 0 + 2.5 \times 2}[/tex]

[tex]\qquad \pmb{ \sf\longrightarrow v = 0 + 5}[/tex]

[tex] \qquad \pmb{\sf \longrightarrow v = 5 \: ms^{-1}}[/tex]

[tex]\qquad \longrightarrow {\pink{\underline{\underline{\pmb{\sf{ Final \: velocity= 5 \: ms^{-1} }}}}}}[/tex]

Henceforth –

  • The final velocity of the car is 5 m/s

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

Otras preguntas