Question

Chapter 2, Problem 2/084 Multistep A sprinter practicing for the 200-m dash accelerates uniformly from rest at A and reaches a top speed of 39 km/h at the 68-m mark. He then maintains this speed for the next 66 meters before uniformly slowing to a final speed of 34 km/h at the finish line. Determine the maximum horizontal acceleration which the sprinter experiences during the run. Where does this maximum acceleration value occur? Finish line 39.9 m ▼Part 1 Your answer is partially correct. Try again. Calculate (a) the magnitude of the tangential acceleration near start of the race and (b) the magnitude of tha tangential accelaration near the end of the race. Answers: (a) lal -0.86 (b) la2.39 m/s

0 0
Add a comment Improve this question Transcribed image text
Answer #1

tamgemtial acceleration

at = v^2/ (2a) = (39* 5/ 18)^2 / ( 2* 66)

at = 0.8891 m/s^2

========

Comment before rate in case any doubt, will reply for sure... goodluck

Add a comment
Know the answer?
Add Answer to:
Chapter 2, Problem 2/084 Multistep A sprinter practicing for the 200-m dash accelerates uniformly from rest...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT