1)Дано:

m=1кг.

V=10м/с.

mV-?

 

2)Дано:

m=0,4кг.

V=20м/с.

h=15м.

Ep-?Ex-?

 

3)Дано:

h1=10см.

х1=2см.

Х2=5см.

h2-?

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