Posted by **joy** on Thursday, November 3, 2011 at 12:03am.

A tortoise can run with a speed of 16.0 cm/s, and a hare can run exactly 25 times as fast. In a race, they both start at the same time, but the hare stops to rest for 2.00 min. The tortoise wins by 20.0 cm.

(a) How long does the race take?

(b) What is the length of the race?

- physics -
**jenny**, Thursday, November 3, 2011 at 12:46am
OMG !! i was suck on this question for like a billion years !! and i still havent gotten the answer!:(

- please someone answer this question -
**Writeacher**, Thursday, November 3, 2011 at 7:14am
Look at the time when you posted this question. Can you figure out why there's no physics tutor online then?

- please someone answer this question -
**Reiny**, Thursday, November 3, 2011 at 8:17am
speed of tortoise = 16 cm/s

speed of hare = 25(16) or 400 cm/s

let the time for tortoise be t seconds

then time for hare = t-120 seconds

distance for tortoise = 16t

distance for hare = 400(t-120)

but they went the same distance, so ....

400(t-120) = 16t

400t - 48000 = 16t

384t = 48000

t = 125

the race took 125 seconds or

2 minutes and 5 seconds

the length of the race was 16t = 16(125) = 2000 cm or 20 metres.

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