A 1200-kg car coasts from rest down a driveway that is inclined 20 to the horizontal and
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A 1200-kg car coasts from rest down a driveway that is inclined 20° to the horizontal and is 15 m long. How fast is the car going at the end of the driveway if
(a) Friction is negligible and
(b) A friction force of 3000 N opposes the motion?
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