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Anonymous users2024-01-24The answer is 20.
It is known that m=2kg, Vo 10m s, h=15m, find V solution: at the moment of throwing, mVo 2 2 + mgh, the mechanical energy of the ball at the moment of landing is the conservation of mechanical energy during the movement of the ball: mVo 2 2 + mgh = mV 2 2
Substituting the known conditions into the solution yields V=20 m-sec (g takes 10).
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Anonymous users2024-01-23E=mgh+1/2mv2=2*v=
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Anonymous users2024-01-22Kinetic energy 400J speed 20m s
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Whoever says what the contract says. You can also look at the property and the owner's occupancy agreement to see if there are any specific provisions. I think it's still yours. Because the structure of the house cannot be changed on the third floor. You can ask the property to support you.
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