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 mother-in-law! ^_^ 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 hot-air balloon accelerates upward at a rate of 2.5...
- calculus 2 - An object falls off a 400-foot 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