Question

A bus increases its speed from 20 km per hour to 50 km per hour in 10 seconds find its acceleration

Answer 1

____heya mate ___

☆☆here is your answer ☆☆

Intial Velocity = u = 200km/hr = 20×5/8
=5.56m/s

Final velocity = v=50 km/hr= 50 ×5/18 =13.89m/s

Time = T = 10 sec

Acceleration =a

A= (v-u) /t

= (13.89-5.56) /10

Ans = 0.833m/s ( square)


hope this answer and method will help you!!!

Answer 2

Given: Initial velocity of bus, u = 20 km/hr

           The final velocity of the bus, v = 50 km/hr

           Time taken, t = 10s

To Find: Acceleration of the bus, a.

Solution:

To calculate a, the formula used:

• Acceleration = change in velocity / time
• a = v- u / t

here, v- u = 50-20

                = 30 km/hr

Now convert km/hr into m/s

1 km = 1000m and 1 hr = 3600s

1 km/hr = 1000/3600

            = 5/18 m/s

So, 30km/hr = 30 x5/18

                     = 150/18

                     = 8.33 m/s

Applying the formula for a :

a = 8.33 / 10

  = 0.833

  = 0.833 m/s²

a = 0.833 m/s²

Hence, the acceleration of the bus is 0.833 m/s².