In an 8.00km race, one runner runs at a steady 11.5km/h and another runs at 14.9km/h.
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
How far from the finish line is the slower runner when the faster runner finishes the race?
OpenStudy (skullpatrol):
any ideas?
OpenStudy (anonymous):
nope
OpenStudy (skullpatrol):
have you seen the distance formula: Distance = rate X time?
OpenStudy (skullpatrol):
Distance traveled = rate X time traveled
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
ok let me try something
OpenStudy (anonymous):
rate is speed right?
OpenStudy (skullpatrol):
yes
OpenStudy (anonymous):
so time=distance/rate..time=8.00km/11.5km/h=92
OpenStudy (skullpatrol):
0.69565217391 h
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
ya i just recalculate it and got the same answer...ok now i need its distance?
OpenStudy (skullpatrol):
Reread the problem and find out what the question is asking for.
OpenStudy (anonymous):
where the slowest guy at when the faster guy cross the finish line
OpenStudy (skullpatrol):
So find out how long it takes the faster guy to cross the finish line and then use that time to find out where the slower guys is, right?
OpenStudy (anonymous):
do i subtract the two hours?
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
ok so 8.00km/14.9km/h=.5369127517
OpenStudy (anonymous):
then now what?
OpenStudy (skullpatrol):
use that time to find out where the slower guys is, right?
OpenStudy (anonymous):
ok so now d=r*t
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
d=.5369127517*11.5
OpenStudy (skullpatrol):
Yes, now answer what the question is asking for.
OpenStudy (anonymous):
6.174496644
OpenStudy (skullpatrol):
How far from the finish line is the slower runner when the faster runner finishes the race?
OpenStudy (skullpatrol):
Remember the race is 8.00km long
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
he's at 6.17km right
OpenStudy (skullpatrol):
yes
OpenStudy (anonymous):
ok thanks
OpenStudy (skullpatrol):
How far from the finish line is the slower runner?
OpenStudy (anonymous):
1.83km
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (skullpatrol):
correct :-)
OpenStudy (anonymous):
A pole-vaulter is nearly motionless as he clears the bar, set 4.2m above the ground. He then falls onto a thick pad. The top of the pad is 80 cm above the ground, and it compresses by 50cm as he comes to rest.What is his acceleration as he comes to rest on the pad?