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MrRa [10]
3 years ago
9

Autobus porusza się ze stałą prędkością 54 km/h Oblicz w jakim czasie przebędzie drogę 450 m

Physics
1 answer:
maria [59]3 years ago
3 0

Answer:

Autobus porusza się ze stałą prędkością 54 km/h Oblicz w jakim czasie przebędzie drogę 450 m

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Explanation:

Given

mass of boy m_b=70.9\ kg

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initially momentum of system is zero so final momentum is also zero because momentum is conserved

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v_b=-\frac{m_g}{m_b}\times v_g

v_b=-\frac{43.2}{70.9}\times 4.64  

v_b=-2.82\ m/s

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