Use the work energy theorem to solve each of these problems and neglect air resistance in all cases. a) a branch falls from the top of a 98.0 m tall redwood tree, starting from rest. how fast is it moving when it reaches the ground? b) a volcano ejects a boulder directly upward 545 m into the air. how fast was the boulder moving just as it left the volcano?

a)43.8 m/s

b)103.54 m/s

Explanation:

Work energy theorem

Δ Δ

a) In this part v1=0 and h2=0

=0

b) in this part v2=0, h1= 0, and h2= 545m

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.