A 2.1 ✕ 103-kg car starts from rest at the top of a 5.9-m-long driveway that is inclined at 19° with the horizontal. If an average friction force of 4.0 ✕ 103 N impedes the motion, find the speed of the car at the bottom of the driveway.

3.9 m/s

Explanation:

We are given that

Mass of car,m=

Initial velocity,u=0

Distance,s=5.9 m

Average friction force,f=

We have to find the speed of the car at the bottom of the driveway.

Net force,

Where

Acceleration,

v=3.9 m/s

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