Word Bank: chemical
climate
dissolve
erosion
permeable
rock surface area water
1. When weathered materials turn into a new substance,
occurred.
weathering has
2. A rock that is
weathers more quickly due to open spaces within the rock.
3. Increasing the
of a rock by breaking it into smaller pieces will make
weathering happen much faster than leaving it as one large rock.
4. The speed at which a rock weathers depends upon the type of
the rock is found in.
and the
rocks with
5. Plant roots hold soil in place, crack rocks with strength of their roots, and
a weak acid.
It can dissolve almost
6. The most important agent of chemical weathering is
anything when given enough time,
7.
is the movement of rock particles by wind, water, ice or gravity.

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

imma come back to you hold on

i do not get it   at all

може ли да зареждате повече информация, моля