Question

A women deriving a 2000kg car along a level road at 30m/s takes her foot off the gas to see how far her car will roll before it slows to a stop.She covers that it takes 150m. . What is the average force of friction acting on the car? A. 9000N B. 6000N C. 3000N D. 400N
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Answer 1

Answer:

B) 6000N

Explanation:

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Answer 2

Answer:

6000N

Explanation:

mass of car is 2000 kg

initial velocity of car is 30 metre per second

final velocity is zero

distance travelled is 150 m

and we know that force is equal to mass into acceleration but we have mass not acceleration

so first we have to find acceleration

we can find acceleration with the help of third equation of motion that is V2 =U2+2as

0 equal to 30 ka square + 2 into a into 150

acceleration is 3 metre per second square sunao force will be mass into acceleration that will be 6000N