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Blizzard [7]
2 years ago
13

What is the mass of a rock on the edge of a 40m cliff with 980 joules of potential energy?

Physics
1 answer:
kobusy [5.1K]2 years ago
3 0

Answer:

Calculate Potential Energy (PE) for the given mass (m), acceleration of gravity (g) and height (h) through gravitational potential energy Calculator

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Which particles in an atom are acted upon by the strong force? A. Electrons and neutrons B. Neutrons and protons O C. Protons an
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2 years ago
An 80-kg quarterback jumps straight up in the air right before throwing a 0.43-kg football horizontally at 15 m/s . Suppose that
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Answer:

0.0241875 m

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m_1 = Mass of quarterback = 80 kg

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Time taken = 0.3 seconds

In this system as the linear momentum is conserved

m_1v_1+m_2v_2=0\\\Rightarrow v_1=-\frac{m_2v_2}{m_1}\\\Rightarrow v_1=-\frac{0.43\times 15}{80}\\\Rightarrow v_1=0.080625\ m/s

Assuming this velocity is constant

Distance=Velocity\times Time\\\Rightarrow Distance=0.080625\times 0.3\\\Rightarrow Distance=0.0241875\ m

The distance the quarterback will move in the horizontal direction is 0.0241875 m

4 0
3 years ago
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