Question

A truck traveling at 54 km/h is slow down to 36 km/h in 10 sec. Find the retardation​

Answer 1

$\mathfrak{\huge{Hi !}}$

$\underline{\sf{Initial\:Velocity\:(u)}} \tt{ = 54\:km/hr}$

$\underline{\sf{Final\:Velocity\:(v)}} \tt{ = 36\:km/hr}$

$\underline{\sf{Time\:taken}} \tt{=10\:s}$

$\tt{Acceleration = \frac{v-u}{t}}$

=》 $\tt{Acceleration = \frac{36-54}{10}}$

=》 $\tt{Acceleration = \frac{(-18)}{10}}$

=》 $\tt{Acceleration = (-1.8)\:m/s^{2}}$

Thus, $\huge{\bf{Retardation = 1.8\:m s^{-1}}}$