Avase with a mass of 0.800 kilograms falls from a height of 0.750 meters to a position of 0.500 meters above the floor. ignoring frictional effects, the total mechanical energy at the 0.500 position is 0.00 j less than 5.88 j more than 5.88 j exactly 5.88 j

Total mechanical energy = Ек + Ep
Ek = (m·V²)/2
Ep = m·g·h

S = (V² + Vo²)/(2·g)

g = 9,8
m = 0,8 kg
Vo = 0
h = 0,5 m
S = 0,75 - 0,5 = 0,25 m

S = V²/(2·g)
V² /2 = g·S
Ek = (m·V²)/2 = m·g·S
Ek = 0,8·9,8·0,25 = 1,96 J

Ep = 0,8·9,8·0.5 = 3,92 J

E = 1,96 + 3,92 = 5,88 J

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.