Answer:
1.29 s
Explanation:
Given:
Δy = 1.40 m
v₀ = 0 m/s
a = 1.67 m/s²
Find: t
Δy = v₀ t + ½ at²
(1.40 m) = (0 m/s) t + ½ (1.67 m/s²) t²
t = 1.29 s
Physical: the raft needs to float, which means what you make the raft out of must be less dense than water.
The raft would need sturdiness- if the raft is frail, the water might break it
Chemical: It can not react with water and it can not be made of a completely soluable substance (something that would dissolve in it like salt)
<span>a. amplitude. is the answer</span>
Hey there!
Here is your answer:
<u><em>The proper answer to this question is a "igneous rock".</em></u>
Reason:
<u><em>Metamorphic rock: Formed by heat and pressure under the Earths crust.</em></u>
<u><em>Sedimentary rock: Formed by deposition in rivers and pressure causes the rocks to compact.</em></u>
<u><em>Igneous rock: The cooling of lava and it crystalizes.</em></u>
<em>Therefore the answer is Igneous rock.</em>
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit
