What is the average braking force of a 1000-kg car moving at 10 m/s braking to a stop in 5 s?

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Beverley SmithLv2

8 Apr 2020

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Driving home from school one day, you spot a ball rolling out intothe street (see the figure ). You brake for 1.30 s, slowing your980-{\rm kg} car from 16.0 \rm m/s to 9.50 \rm m/s.
What was the magnitude of the average force exerted on your carduring braking?
Express your answer using two significant figures.
F =

\rm N
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Part B
What was the direction of the average force exerted on your carduring braking?

To the direction of motion.
Opposite to the direction of motion.

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Part C
How far did you travel while braking?
\Delta x =

\rm m
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A train -- traveling at 270 km/h -- is braked to a stop inthedistance of 4700 m. If the mass of the trainis8.36Ã10⁵ kg, what is the average braking force?

A train -- traveling at 240 km/h -- is braked to a stop inthedistance of 5000 m. If the mass of the trainis8.21Ã10⁵ kg, what is the average braking force?

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What is the average braking force of a 1000-kg car moving at 10 m/s braking to a stop in 5 s?

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