Question

A bus increase its speed from 80kmh,-1to 60kmh,-1in 5 second find the acceleration of the Bus

Answer 1

GIVEn

A bus increase its speed from 80kmh,-1to 60kmh,-1 in 5 second

TO FINd

find the acceleration of the Bus

SOLUTIOn

• Initial velocity (u) = 60km/h
• Final velocity (v) = 80km/h
• Time taken (t) = 5 sec
• Acceleration (a) = ?

→ u = 60 km/h

→ u = 60 × 5/18

→ u = 16.6 m/s

Now,

→ v = 80 km/h

→ v = 80 × 5/18

→ v = 22.2 m/s

So, Apply this formula

→ v = u + at

→ 22.2 = 16.6 + a*5

→ 22.2 - 16.6 = 5a

→ 5.6 = 5a

→ a = 5.6/5 = 1.12 m/s²

Hence, the acceleration of bus is 1.12m/s²

Answer 2

Answer:

tour answer is here

given:-u= 80 km/h=20/9 m/s

v=60km/h=50/3 m/s

t=5 second

we know acceleration =v-u/t

    =         (50/3)-20/9)/5

= 130/9×5=2.8888888888m/s²

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