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Sergeeva-Olga [200]
3 years ago
15

Please answer all of these questions and you will get the brain list

Physics
1 answer:
pogonyaev3 years ago
6 0

Answer:

1=900j

2=140j

3=5m

Explanation:

1,

work=force×displacement

w=450×2

w=900j

2,

w=f×s

w=70×2

w=140j

3,

w=f×s

200=40×s

200/40=s

s=5m

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as a legal search

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You have been hired to design a spring-launched roller coaster that will carry two passengers per car. The car goes up a 12-m-hi
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Answer:

Vmax=11.53 m/s

Explanation:

from conservation of energy

      E_A} =E_{B}

     Spring potential energy =potential energy due to elevation

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   0.5*k*2.3²= 430*9.81*6

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For safety reason

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                                    k"=10812.88 N/m

agsin from conservation of energy

      E_A} =E_{C}

    spring potential energy=change in kinetic energy

   0.5*k"*x²=0.5*m*V_{max}^{2}

      10812.88 *2.3²=430*V_{max}^{2}

           V_{max}=11.53 m/s

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my mind

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