Posted by **nj** on Tuesday, September 16, 2008 at 10:17pm.

A wrecking ball is hanging at rest from a crane when suddenly the cable breaks. The time it takes for the ball to fall halfway is 1.6 seconds. Find the time it takes for the ball to fall from rest all the way to the ground.

- physics -
**Anonymous**, Tuesday, September 16, 2008 at 11:44pm
For constant acceleration with 0 initial velocity, the distance is:

distance = (1/2) (acceleration)(time^2)

If D= the total distance to the ground:

D = (1/2)g(TotalTime^2)

(1/2)D=(1/2)g(MidpointTime^2)

or

(1/2)g(TotalTime^2)= 2[(1/2)g(MidpointTime^2)]

(TotalTime^2) = 2(MidpointTime^2)

the problem states MidpointTime=1.6s

Substitute and solve for the total time

d=1/2at^2

a is the acceleration of gravity, t is given as 1.6s. Plug those in and solve for d. The problem states that is halfway.

## Answer this Question

## Related Questions

- physics - A wrecking ball is hanging at rest from a crane when suddenly the ...
- physics - A wrecking ball is hanging at rest from a crane when suddenly the ...
- physics - A wrecking ball is hanging at rest from a crane when suddenly the ...
- Physics, please help - Hello, I don't know how about to answering this question...
- PHYSICS - A 1250 KG wrecking ball is lifted to a height of 12.7 m above its ...
- Algebra 1 Answer Evaluation - The height of a soccer ball kicked from the ground...
- physics - A 6840 N wrecking ball hangs from the end of a steel cable. What is ...
- algebra 1 NEED NOW!!! PLEASE HELPPP - The height of a soccer ball that is kicked...
- algebra 1 NEED NOW!!! PLEASE HELPPP - The height of a soccer ball that is kicked...
- Math - A ball is dropped from a height of 36 feet. The quadratic equation d=1/2 ...