Sunday

December 21, 2014

December 21, 2014

Posted by **sabrina** on Saturday, January 11, 2014 at 10:59pm.

a ﬁsh from a height of 4.3 m. The ﬁsh travels

8.3 m horizontally before it hits the water

below.

What was the pelican’s initial speed? The

acceleration of gravity is 9.81 m/s

2

.

Answer in units of m/s

- physics -
**Elena**, Sunday, January 12, 2014 at 3:05amh=gt²/2

t=sqrt(2h/g)

x=v(x) •t =>

v(x) =x/t=x/sqrt(2h/g) =

=8.3/sqrt(2•4.3/9.81)=8.9 m/s

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