I've tried converting this into m/s and every answer I get is coming out wrong.
017 (part 1 of 3) 10.0 points
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/s squared
.
018 (part 2 of 3) 10.0 points
What force was exerted to stop Suzie?
Answer in units of N.
019 (part 3 of 3) 10.0 points
Where did this force come from?
1. All of these
2. the upward force exerted by the ground
3. the friction between the ground and the
skates
4. the friction between the air and Suzie
5. the gravity