v(t) = S'(t)
S(t) = 2t² + at + C
S(2) - S(0) = 2*2² + 2a + C - C = 48
8 + 2a = 48
2a = 40
a = 20
Ответ: 20
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v(t) = S'(t)
S(t) = 2t² + at + C
S(2) - S(0) = 2*2² + 2a + C - C = 48
8 + 2a = 48
2a = 40
a = 20
Ответ: 20