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February 24, 2026, 05:23:35 pm

Author Topic: Deceleration implication  (Read 607 times)  Share 

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kenhung123

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Deceleration implication
« on: May 30, 2010, 09:24:34 pm »
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When a vehicle or someone riding a bike decelerate, does it imply that the force of engine =0 So Fnet=Friction?

m@tty

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Re: Deceleration implication
« Reply #1 on: May 30, 2010, 09:30:30 pm »
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No. All that it implies is that the net force has a component opposite to the motion.

You could be providing 800N driving force, but if there is more than that opposing the motion (ie. on a slope component of weight, and friction) then there would be deceleration. Confusing example, but the principle still applies.
« Last Edit: May 30, 2010, 09:33:16 pm by m@tty »
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Blakhitman

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Re: Deceleration implication
« Reply #2 on: May 30, 2010, 09:31:51 pm »
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Friction force > Driving force.

so the Net force is towards the opposite direction of the motion.