Computers and Technology, 09.11.2020 17:00 c1100321311
A scared kangaroo clears a fence that is 2.44 meters tall. What is the vertical component of the kangaroos velocity at take off ? If the horizontal component of the kangaroos velocity is 4.80 m per s at what angle did the kangaroo take off the ground? (hint: at its maximum height the kangaroos vertical velocity is 0)
Answers: 3
(Eq. 1)
, 
- Initial and final translational kinetic energies, measured in joules.
, 
- Initial and final gravitational potential energies, measured in joules.![\frac{1}{2}\cdot m\cdot [(v_{1,x}^{2}+v_{1,y}^{2})-(v_{2,x}^{2}+v_{2,y}^{2})] = m\cdot g \cdot (y_{2}-y_{1})](/tpl/images/0880/2354/59aa8.png)
![\frac{1}{2}\cdot [(v_{1,x}^{2}+v_{1,y}^{2})-(v_{2,x}^{2}+v_{2,y}^{2})] = g \cdot (y_{2}-y_{1})](/tpl/images/0880/2354/c5a68.png)
(Eq. 2)
- Mass of the kangaroo, measured in kilograms.
- Gravitational acceleration, measured in meters per square second.
, 
- Initial and final heights of the kangaroo above the ground, measured in meters. 
, 
- Vertical and horizontal initial velocities, measured in meters per second.
, 
- Vertical and horizontal final velocities, measured in meters per second.
, 
, 
, 
and 
, then (Eq. 2) is reduced into this:
), measured in sexagesimal degrees, is obtained by the following inverse trigonometric relation:
(Eq. 3)
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A scared kangaroo clears a fence that is 2.44 meters tall. What is the vertical component of the kan...
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