Match the following. 1 . buffer Two or more units are added together to form a new compound 2 . enzyme Accelerates a chemical reaction without being used up in the reaction 3 . catalyst When a reversible reaction is occurring in both directions at the same rate 4 . chemical equilibrium All of the chemical reactions in the organism for maintenance of the processes of life 5 . synthesis reaction A substance which will resist changes in pH within reasonable limits 6 . metabolism A protein molecule which speeds up a specific chemical reaction in biological systems

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

5.6⋅10−^19  j

do you need the explaination?

it's 3.2 on edge, i just took the test.