tshiMrsRbritzica tshiMrsRbritzica

21-12-2016
Physics

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In which situation is the object experiencing unbalanced forces?

A) A box resting on a horizontal floor.
B) A car slowing as it reaches a traffic light.
C) A car with its cruise control set to 30 km/h.
D) A penny at terminal velocity after falling off of a building.

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leecanmex leecanmex

21-12-2016

A car slowing as it reaches a traffic light, because it is the only option with acceleration/ deceleration.
And forces require the mass of the object AND the acceleration.

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