1. The speed of a motorcycle increases from 10 km/hr to 50 km/hr in 9
seconds. What is its acceleration?*

Acceleration of motorcycle is 4.44 km/sec²
Starting velocity = 10 km/hr
Final velocity = 50 km/hr
Time taken = 9 second
Acceleration of motorcycle
Acceleration of motorcycle = [Final velocity - Initial velocity] / Time taken
Acceleration of motorcycle = [50 - 10] / 9
Acceleration of motorcycle = [40] / 9
Acceleration of motorcycle = 4.44 km/sec²
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