Monday

December 22, 2014

December 22, 2014

Posted by **Anya** on Tuesday, January 10, 2012 at 8:51pm.

I think it's either 1440 km/hr/hr

or 0.4 km/hr/sec. Are you supposed to convert the seconds? Thank you in advance.

- 8th Grade Science -
**Anya**, Tuesday, January 10, 2012 at 8:52pmThis involves the acceleration formula.

- 8th Grade Science -
**Damon**, Tuesday, January 10, 2012 at 9:01pma = change in velocity/change in time

change in velocity = 31000 m/hr/3600 s/hr - 29000m/hr/3600 s/hr = .56 m/s

so

.56 m/s / .5 s = 1.11 m/s^2

- 8th Grade Science -
**Anya**, Tuesday, January 10, 2012 at 9:07pma= (31km/hr - 29km/hr) / 5sec

a= 0.4 km/hr/s

That's how I got one of the answers....I am confused at what you are trying to show me.

- 8th Grade Science -
**Anya**, Tuesday, January 10, 2012 at 9:12pma= (Vf - Vi) / t

**Answer this Question**

**Related Questions**

Science - Please Check my Answer 2 - My problem: One runner in a relay race has ...

physical science - I am having a little trouble with this problem. can someone ...

Physics - A runner completes an 850m race with two laps of the 425m track in the...

science - A runner whose mass is 49 kg accelerates from a stop to a speed of 6 m...

Physics - An 18-year-old runner can complete a 10.0-km course with an average ...

physics - An 18-year-old runner can complete a 10.0-km course with an average ...

Physics - An 18-year-old runner can complete a 10.0-km course with an average ...

physics - An 18-year-old runner can complete a 10.0 km course with an average ...

physics - An 18-year-old runner can complete a 10.0 km course with an average ...

Physics - Two runners have a race. The first runner decides to run with his full...