Suzie (of mass 62 kg) is roller-blading down
the sidewalk going 16 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 0.5 seconds.
What is Suzie’s average acceleration?
Answer in units of m/s2
.
018 (part 2 of 3) 10.0 points
What force was exerted to stop Suzie?
Answer in units of N.
16 mi/hr * 1609m/mi * 1hr/3600s = 7.156 m/s
so a = -14.31 m/s^2
F = ma