Posted by Robbi on Thursday, December 2, 2010 at 10:13pm.
My mother in law falls from a 200m cliff. Answer the following.
a. What is her acceleration after 2 seconds? What is her acceleration after 3 sec?
b. How long will it take her to hit the ground?
c. What would be her velocity right before she hit the ground?

Science  Ann Hiro, Friday, December 3, 2010 at 12:00am
a) Acceleration due to gravity is a 'constant' force (generally 9.8m/s^2), so in both cases, she will be accelerating at 9.8m/s^2
b) Sorry, I don't remember the formulas, so I'm using calc for this (velocity is the integral of acceleration, position is the integral of velocity, no need for constants of integration). t = 6.388766 sec
c) v = 9.8t, so v @ 6.388766 = 62.60991 m/s
Congrats on the loss of your motherinlaw! ^_^ b
Answer This Question
Related Questions
 Physics  1.You are stuck on a cliff and want to know how far to the bottom. You...
 MATH  The height h in feet of an object after t seconds is given by the ...
 physics  During liftoff, a hotair balloon accelerates upward at a rate of 2.5...
 calculus 2  An object falls off a 400foot tower. With g=32ft/sec^2, as at the ...
 physics  A stone falls from rest from the top of a cliff. A second stone is ...
 Algebra I  After a baseball is hit, the height h (in feet) of the ball above ...
 math  Boris throws a ball vertically upward from the top of a cliff. The height...
 Physics  Ball is thrown horizontally off a cliff with an initial speed of 20m/s...
 Math  A ball is dropped from a height of 36 feet. The quadratic equation d=1/2 ...
 physics  An object falls from the top of the school, which is 6.06m high. ...
More Related Questions