Question

A bus driver applies the brakes and slow down the velocity of the bus From 60km/hr to 30km/hr In 5.5 seconds.calculate the accerlaration of the bus

Answer 1

Answer:

Given:

Initial velocity = 60 km/hr

Final velocity = 30 km/hr

Time taken = 5.5 sec

To find:

Acceleration of bus

Concept:

Acceleration refers to to the instantaneous change of velocity with respect to time. Acceleration is a vector quantity having both magnitude as well as direction.

Conversion:

60 km/hr = 60 × (5/18) = 16.66 m/s

30 km/hr = 30 × (5/18) = 8.33 m/s

Calculation:

$acc. = \dfrac{16.66 - 8.33}{5.5}$

$= > acc. = \dfrac{8.33}{5.5}$

$= > acc. = 1.514 \: m {s}^{ - 1}$

So final answer is :

Acceleration is 1.514 m/s²