Ek = 1/2.m.v²
1/2.m.v² = 124
a.
Ek = 1/2. m.(1,5.v)²
Ek = 1/2. m. 2,25.v²
Ek = 2,25. 1/2. m.v²
Ek = 2,25. 124 = 279 J
b.
Ek = 1/2. 3.m.(1,5.v)²
Ek = 1/2. 3.m. 2,25.v²
Ek = 6,75. 1/2. m.v²
Ek = 6,75. 124 = 837 J
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Ek = 1/2.m.v²
1/2.m.v² = 124
a.
Ek = 1/2. m.(1,5.v)²
Ek = 1/2. m. 2,25.v²
Ek = 2,25. 1/2. m.v²
Ek = 2,25. 124 = 279 J
b.
Ek = 1/2. 3.m.(1,5.v)²
Ek = 1/2. 3.m. 2,25.v²
Ek = 6,75. 1/2. m.v²
Ek = 6,75. 124 = 837 J