Suzie (of mass 76 kg) is roller-blading down the sidewalk going 50 miles per hour. she notices a group of workers down the walkway who have unexpectedly blocked her path, and she makes a quick stop in 1.2 seconds. what is suzie’s average acceleration?

Acceleration,

Explanation:

Given that,

Mass of Suzie, m = 76 kg

Initial speed of Suzie, u = 50 mph = 22.35 m/s

Finally, it stops, v = 0

Time, t = 1.2 s

Let a is the Suzie’s average acceleration. It is equal to the rate of change of velocity. Its formula is given by :

So, the average acceleration of Suzie’s is and she is decelerating. Hence, this is the required solution.

the body's situation won't change the forces are equal opposit and on the same body