If a = 23 and b = 45
a + b = ?
23 + 45 = 68
121.92 is the answer I believe
How does physical weathering compare to natural erosion?Physical weathering is the breakdown of rocks and soil, while natural erosion is the removal of solids (sediment, soil, rock) and occurs with movement. Eosion differs from weathering because it is transferred by wind, water, and ice; gravity has an immense role in erosion; and even living organisms are a key <span>component to erosion because certain species burrow, which disturbs the soil. </span>
I feel like it could be A
Answer:
Explanation:
Initial momentum
4.0(9) + 2.0(-9) = 18 kg•m/s
final momentum
4.0(-3) + 2.0(15) = 18 kg•m/s
Initial kinetic energy
½4.0(9²) + ½2.0(-9²) = 243 J
final kinetic energy
½4.0(-3²) + ½2.0(15²) = 243 J
