A 1000 kg car is moving on flat road at a constant speed of 25 m/s. What is the magnitude of average not force, that is required to slowing the car to 12.5 m/s within 22 seconds?

Question

Physics

Emilia

5 August, 14:15

A 1000 kg car is moving on flat road at a constant speed of 25 m/s. What is the magnitude of average not force, that is required to slowing the car to 12.5 m/s within 22 seconds?

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Answers (1)

Know the Answer?

Amiah Berg · Answer 1

Answer:-600N

Explanation:

Mass (m) = 1000kg

Initial velocity (u) = 25m/s

Final velocity (v) = 12.5m/s

Time (t) = 22 seconds

v=u+axt

12.5=25+ax22

collect like terms

12.5-25=22a

-12.5=22a

Divide both sides by 22

-12.5/22=22a/22

-0.6=a

Acceleration=-0.6

Force=mass x acceleration

Force=1000 x - 0.6

Force=-600