Agirl skateboards with a kinetic energy of 2543.2 j. if the girl and skateboard have a total mass of 110kg , what is her speed ?

6.8 Miles

Write at least 20 characters to explain it well.

an altitude of 15,000 feet

step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it