# A Bus Increases Its Speed from 36 Km/H to 72 Km/H in 10 Seconds. Its Acceleration is : - Science

MCQ

A bus increases its speed from 36 km/h to 72 km/h in 10 seconds. Its acceleration is :

• 5 m/s2

• 2 m/s2

• 3.6 m/s2

• 1 m/s2

#### Solution

1 m/s2

Final velocity is = 72 km/h = 20 m/s
Initial velocity is = 36 km/h = 10 m/s
Time taken is 10 sec. so,
Acceleration = (20-10)/10
= 1 m/s2
So, the answer is
(d) 1 m/s2

Concept: Rate of Change of Velocity
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#### APPEARS IN

Lakhmir Singh Science Class 9 Physics
Chapter 1 Motion
MCQ | Q 41 | Page 42