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pashok25 [27]
3 years ago
10

Look at the quote: "Newton's laws of motion can be summarized in two simple ideas...." According to Newton's laws of motion, the

re are three laws. How can you summarize this with two simple ideas?
Physics
1 answer:
sertanlavr [38]3 years ago
6 0
Bell math hajawonbejwbwbanananwnw w a. Sor
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Squids propel themselves by expelling water. They do this by keeping water in a cavity and then suddenly contracting the cavity
Musya8 [376]

Answer:

v_squid = - 2,286 m / s

Explanation:

This exercise can be solved using conservation of the moment, the system is made up of the squid plus the water inside, therefore the force to expel the water is an internal force and the moment is conserved.

Initial moment. Before expelling the water

          p₀ = 0

the squid is at rest

Final moment. After expelling the water

         p_{f} = M V_squid + m v_water

         p₀ = p_{f}

          0 = M V_squid + m v_water

           c_squid = -m v_water / M

The mass of the squid without water is

            M = 9 -2 = 7 kg

let's calculate

           v_squid = 2 8/7

           v_squid = - 2,286 m / s

The negative sign indicates that the squid is moving in the opposite direction of the water

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