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Which is NOT an example of unbalanced forces acting on an object


A.an acorn falling from a tree

B.a car traveling straight down a road at 40km/h

C.a motorcycle changing speed from 20km/h to 35km/h

D.a truck slowing down as it approaches a red light

Respuesta :

quasarJose

Answer:

C. a motorcycle changing speed from 20km/h to 35km/h

Explanation:

The choice not showing unbalanced forces acting on the object is a motorcycle changing speed from 20km/h to 35km/h.

This change in velocity shows that the body is accelerating during the time interval.

When a body is accelerating, it is changing it's motion and this implies that some unbalanced forces are acting in the body. Unbalanced body changes the state of motion of a body from rest to acceleration or deceleration as the case may be.  

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