When two vectors u and v act in opposite directions to each other they have a resultant of 10 units. When they are perpendicular to each other they have a resultant of 50 units. What are the magnitudes vectors u and v?

A) |u| = 40 units and |v| = 30 units
B) |u| = 10 units and |v| = 30 units
C) |u| = 20 units and |v| = 30 units
D) |u| = 30 units and |v| = 30 units

! 55 !  

write a paragraph or story to explain the transformation between potential and kinetic energy as shown in your picture or model.  

you should have at least 5 complete sentences with a main idea and supporting details.  

you must include the following words:  

potential energy

kinetic energy

mechanical energy

conservation of energy

dude, this is hard lol : ))