Ask Question
12 May, 01:03

A 2,000 kg car starts from rest and coasts down from the top of a 5.00 m long driveway that is sloped at an angel of 20o with the horizontal. If an average friction force of 4,000 N impedes the motion of the car, find the speed of the car at the bottom of the driveway.

+3
Answers (1)
  1. 12 May, 01:09
    0
    The speed at the bottom of the driveway is3.67m/s.

    Explanation:

    Height, h = 5sin20° = 1.71m

    Potential energy PE=mgh = 2000*9.8*1.71

    PE = 33516J

    KE = PE - Fk * d

    0.5mv^2 = 33516 - (4000*5)

    0.5*2000v^2 = 33516 - 20000

    1000v^2 = 13516

    v^2 = 13516/1000

    v = sqrt 13.516

    v = 3.67m/s
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A 2,000 kg car starts from rest and coasts down from the top of a 5.00 m long driveway that is sloped at an angel of 20o with the ...” in 📙 Physics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers