Question

A bus decreases its speed from 80 kilometre per hour to 60 km per hour in 5 second find the acceleration of the bus.​

Answer 1

Answer:

initial speed u= 80 km/h =80×5/18=22.22m/s

final speed v=60km/h=5/18=16.67m/s

using v=u+at

or 16.67=22.22+a×5

a=-1.1m/s®

Answer 2

$\huge\mathcal{\fcolorbox{yellow}{red}{Answer࿐}}$

$\huge\bold\color{lime}GIVEN:$

⇒ Initial velocity of Bus ( u )=80 km/h =22.22 m/s

⇒ final velocity of Bus ( v ) = 60 km/h =16.66m/s

⇒ Time ( t ) = 5 s

$\huge\mathcal\pink{★Acceleration\:Formula★}$

$⟹ accleration = \frac{v \: - \: u}{t}$

$⟹ accleration = \frac{16.66\: - \: 22.22}{5}$

$⟹ accleration = \frac{ - \:5.56 }{5}$

$⟹ accleration = - 1.112m/s$

★It is negative acceleration★

$\huge\mathcal\color{aqua}I\:hope\:it\:helps\:you.$