Question

A cars velocity on a straight highway increases uniformly from 20km/h to 70km/h in 0.008h. Find the acceleration in km/h2

Answer 1

acceleration is change in velocity over time

acceleration = (final velocity – initial velocity) / Time

= (70km/h – 20km/h) / 0.008h

= 6250 km/h²

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Answer 2

Answer:

a = 70 km/h - 20 km/h / 0.008 h  = 50 km/h / 0.008 h  = 6250 km/h²