Question

4. A bus decreases its speed from 80 km/hg to 60 km/h
in 5 sec. Find the acceleration of the bus.​

Answer 1

Answer:

The acceleration of the bus that decreases its speed from 80 kilometers per hour to 60 km per hour in 5 seconds is -1.12m/s.

Answer 2

Answer:

Acceleration of the bus is -1.12 m/s²

It is undergoing deceleration.

Step-by-step explanation:

Given :-

Initial velocity (u) = 80 Km/h

Final velocity (v) = 60 Km/h

Time taken (t) = 5 sec

To find :-

Acceleration (a)

Solution :-

u = 80 Km/h

• $80\;*\frac{5}{18}\;m/s$

• $22.2\;m/s$

v = 60 Km/h

• $60\;*\frac{5}{18}\;m/s$

• $16.6\;m/s$

t = 5 sec

$Acceleration\;=\frac{change\;in\;velocity}{time}$

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

$Acceleration\;=\frac{16.6\;-22.5}{5}$

$Acceleration\;=\frac{-5.6}{5}$

$Acceleration\; = -1.12\;m/s^2$