An 1100-kg car traveling at 27.0 m/s starts to slow down and comes to a complete stop in 578 m. What is the magnitude of the average braking force acting on the car?

693 N.

Explanation:

Given that

m = 1100 kg

Initial velocity ,u = 27 m/s

Final velocity ,v= 0 m/s

s= 578 m

Lets take the acceleration = a

We know that

v ²=u² + 2 a s

0 ²=27² + 2 x a x 578

We know that

Force = Mass x Acceleration

F= 1100 x (-0.63) N

F= - 693 N

Therefore the  force is 693 N.

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