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A 4.2 × 10^3
kg car accelerates from rest at
the top of a driveway that is sloped at an angle of 18.4◦
with the horizontal. An average
frictional force of 4.1×10^3 N impedes the car’s
motion so that the car’s speed at the bottom of the driveway is 4.9 m/s.
The acceleration of gravity is 9.81 m/s^2.
What is the length of the driveway?
Answer in units of m

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