Question

A bus starts from rest and moving with uniform acceleration attains a velocity of 50 km/h in 3 minutes. Find the acceleration and the distance travelled. please explain the answer​

Answer 1

Given :

• Initial velocity (u) = 0 m/s
• Final velocity (v) = 50 km/h
• Time taken (t) = 3 mins

To find :

• Acceleration (a)
• Distance travelled (s)

Solution :

We have,

=> u = 0 m/s

=> v = 50 Km/h

>> v = 50 × 5/18 m/s

13.89 m/s

=> t = 3 minutes

3 × 60 sec

180 sec

Acceleration :

=> Change in velocity/Time taken

>> v - u/t

13.89 - 0/180

0.077 m/s²

Distance :

=> s = ut + 1/2at²

>> s = 0(180) + 1/2 × 0.077 × (180)²

>> s = 0 + 1/2 × 2494.8

>> s = 1247.4 m