Saturday

January 31, 2015

January 31, 2015

Posted by **ted** on Wednesday, November 24, 2010 at 4:50pm.

A. After 10secs how far have the divers fallen?

B. They open their chutes at an altitude of 1000metres. how long did they free-fall?

C. If a parachute does noe open at 1000metres,how much time is left to use the emergency chute?

For (a),I got H=5000 and (b), I got t=30secs

BUT i do not know how to get the answer for QUESTION (C).

PLS HELP ME ,HAVE TRIED IT BUT I DIDN'T GET IT.

- math -
**Reiny**, Wednesday, November 24, 2010 at 5:43pmFind out how long it would take to fall the entire 5500 m

so

0 = 5500 - 5t^2

t^2 = 1100

t = 33.167 sec

but he has already fallen for 30 sec , so he has

3.167 sec left

**Answer this Question**

**Related Questions**

Math - A model airplane is shot up from a platform 1 foot above the ground with ...

math - The distance in feet that a skydiver is from the ground (t) seconds after...

Algebra 2. Please Help Someone!! - an airplane's altitude is 100 feet as it ...

Math. Help Thanks! - Hot dogs and Hamburgers: 1.) The caterer for your class ...

SOMEONE HELP PLEASE..DUE AT MIDNIGHT - Hot dogs and Hamburgers: 1.) The caterer...

math - Neglecting wind resistance,the height,h,in feet, of a sky diver,t,seconds...

Physics - A model rocket blasts off from the ground, rising straight upward with...

Phyics - A model rocket blasts off from the ground, rising straight upward with ...

physics - A model rocket blasts off from the ground, rising straight upward with...

Physics - A model rocket blasts off from the ground, rising straight upward ...