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Ainat [17]
4 years ago
14

HELP ASAPPPP PLZZZZZZ I WILL GIVE YOU 50 POINTS

Physics
2 answers:
Schach [20]4 years ago
3 0

Answer:

the answer is c i know it

Explanation:

its c

xz_007 [3.2K]4 years ago
3 0

Answer:

Kinetic Energy and speed mass

Explanation:

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You have been called to testify as an expert witness in a trial involving a head-on collision. Car A weighs 690.0 kg and was tra
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Answer:

115 km/h

Explanation:

m_1 = Mass of car A = 690 kg

m_2 = Mass of car B = 520 kg

g = Acceleration due to gravity = 9.81 m/s²

a = Acceleration

u = Initial velocity

v = Final velocity

a=\mu g\\\Rightarrow a=0.75\times 9.81\\\Rightarrow a=7.3575\ m/s^2

v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 7.3575\times 6+0^2}\\\Rightarrow v=9.396\ m/s

m_1u_1 + m_2u_2 =(m_1 + m_2)v\\\Rightarrow u_1=\frac{(m_1 + m_2)v-m_2u_2}{m_1}\\\Rightarrow u_1=\frac{(690+520)9.396-520\times -\frac{74}{3.6}}{690}\\\Rightarrow u_1=31.96\ m/s

Converting to km/h

31.96\times 3.6=115.056\ km/h

Initial velocity of car A = 115 km/h

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ou are looking for a new tennis partner. Which of these people would most likely demonstrate good sportsmanship based on the inf
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As you are looking for a new tennis partner. People should keep in mind that they should go for the one who most likely demonstrate good sportsmanship

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