Homework Help: Physics

Posted by Senko on Wednesday, September 26, 2012 at 4:43pm.

A gray kangaroo can bound across level ground with each jump carrying it 8.4 from the takeoff point. Typically the kangaroo leaves the ground at a 23 angle. What is its takeoff speed? What is its maximum height above the ground?

Physics - bobpursley, Wednesday, September 26, 2012 at 4:46pm
speed*cos23*timeinair=8.4
speed= you solve it in terms of t.

then vertical equation:

hf=hi-4.9t^2+speed*sin23*t

put what you solved for speed above into this equation, then solve for timeinair.
then solve for speed.

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