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otez555 [7]
3 years ago
6

Together, Claudia and her bicycle have a mass of 90 kg. What force is needed to give them an acceleration of 2 m/s²? Ignore the

effects of air resistance.
Physics
1 answer:
Strike441 [17]3 years ago
5 0

Answer:

180

Explanation: force= mass x acceleration

                                   90     x     2

                                        = 180

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Two rams run toward each other. One ram has a mass of 49 kg and runs west
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Answer: (d)

Explanation:

Given

Mass of the first ram m_1=49\ kg

The velocity of this ram is v_1=-7\ m/s

Mass of the second ram m_2=52\ kg

The velocity of this ram v_2=9\ m/s

They combined after the collision

Conserving the momentum

\Rightarrow m_1v_1+m_2v_2=(m_1+m_2)v\\\Rightarrow 49\times (-7)+52\times (9)=(52+49)v\\\Rightarrow v=\dfrac{125}{101}\ m/s \quad[\text{east}]

Momentum after the collision will be

\Rightarrow 101\times \dfrac{125}{101}=125\ kg-m/s\ \text{East}

Therefore, option (d) is correct

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