Answer:
a) 6.26 m/s
b) 7.67 m/s
Explanation:
The potential energy at height h0 is initially ...
PE0 = mgh0
At height h1, the potential energy is ...
PE1 = mgh1
The difference in potential energy is converted to kinetic energy:
PE0 -PE1 = KE1 = (1/2)m(v1)^2
Solving for v1, we have ...
mg(h0 -h1) = (1/2)m(v1)^2
2g(h0 -h1) = (v1)^2
v1 = √(2g(h0 -h1))
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a) When the body is 1 m high, its speed is ...
v = √(2(9.8)(3 -1)) ≈ 6.26 m/s . . . at 1 m high
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b) When the body is 0 m high, its speed is ...
v = √(2(9.8)(3 -0)) ≈ 7.67 m/s . . . when it reaches the ground
Answer:
5 seconds
Explanation:
<em>Acceleration = (final velocity - initial velocity) ÷ time</em>
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Answer:
Wow I hope to never have to learn this
Explanation:
They continued to study its behavior and decided that it probably travels<span> in both waves and particles.
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C. Uranium
Explanation:
Uranium is not associated with nuclear fusion process. Uranium serves as fuels in the process of nuclear fission.
- Nuclear fusion is the combination of small atomic nuclei into larger ones with the release of large amount of energy .
- Nuclear fusion involves the lightest nuclei such as hydrogen. The products are also not heavy isotopes.
- But in nuclear fission, heavy and unstable radionuclides are involved like uranium and lead.
Learn more:
Transmutation brainly.com/question/3433940
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