Question

A truck velocity on a straight highway increases uniformly from 15km/hr to60 km/hr in 20 seconds.what is it's acceleration?

Answer 1

Answer: 0.625 m/s OR 2.25 km/h

Steps: given below

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Answer 2

Given that,

Initial speed of a truck, u = 15 km/h =4.16 m/s

Final speed of a truck, v = 60 km/h = 16.67 m/s

Time, t = 20 s

To find,

Acceleration of a truck.

Solution,

The change in velocity of an object divided by total time taken is called its acceleration. It is given by :

$a=\dfrac{v-u}{t}\\\\a=\dfrac{16.67 -4.16 }{20}\\\\a=0.62\ m/s^2$

So, the acceleration of the truck is 0.62 m/s².

Learn more,

Acceleration

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