A plane is flying 120 m above the ground at an angle of 30 degrees to the horizontal, when the pilot released 2 fuel tanks to decrease the planes load. How long did the tanks fall and with what speed did it hit the ground of the plane's speed was 84 m/s?

2.26 seconds97m/s

Explanation:

1. Fall time

i) Find the vertical speed of the plane when the tanks were released

         

That is the same initial vertical speed of the tanks.

ii) Find the fall time

         

         

         

         

         

       

Only the positive value has aphysical meaning: t = 2.26 seconds.

2. Speed when they hit the ground

i) The horizontal speed is constant:

         

ii) The vertical speed is:

           

           

iii) Total speed

         

         

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

Iwas going to ask that quesytion  sorry dude i dont  know : (    : /