The speedometer readings of a car are shown below. Find the acceleration of the car .What is the SI unit of acceleration . Time speed 9.10am 36km/h 9.40 am 72 km/h
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Time (9.10 - 9.40) = 30 mins = 1/2 hr
Initial velocity = 36 km/h
Final velocity = 72 km/h
acceleration = final velocity - initial velocity/ Time taken
= 72 - 36 / 1/2
= 36
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1/2
= 36 × 2
= 72 km/hr
m/s. = 72 × 1000/ 3600
ans ; 20 m/s
The S.I unit of acceleration is m/s.
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