Question

Calculate the acceleration of the car starting from rest which attains a velocity of 30 m/s in 0.5 min.​

Answer 1

Answer:

1. Given: Initial velocity (u) = 0 m/s. Final velocity (v) = 30 m/s. Time taken (t) = 3 min = 180 s.
2. To Find: Acceleration (a)
3. Answer: From first equation of motion: Acceleration (a) of the car = 1.67 s.

Initial velocity (u) = 0 m/s

Final velocity (v) = 30 m/s

Time taken (t) = 3 min = 180 s

To Find:

Acceleration (a)

Answer:

From first equation of motion:

ni

$\begin{gathered} \bf \leadsto v = u + at \\ \\ \rm \leadsto 30 = 0 + 180t \\ \\ \rm \leadsto t = \dfrac{3 \cancel{0}}{18 \cancel{0}} \\ \\ \rm \leadsto t = \dfrac{1}{6} \: s \\ \\ \rm \leadsto t = 1.67 \: s\end{gathered}$

∴ Acceleration (a) of the car = 1.67 s