Jawaban:
a. v = 3 m/s
b. a = 6.t
c. kecepatannya nol saat t = 2√2 s
Penjelasan:
x=5-24t+t³
a. kecepatan saat t =3 detik
v = dx/dt = -24+3t²
v = -24 + 3.3² = -24 + 27
v = 3 m/s
b. percepatan setiap saat
a = dv/dt = 6.t
c. kecepatannya nol
v = -24+3t²
0 = -24+3t²
3t² = 24
t² =8
t = √8 = 2√2 s
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Jawaban:
a. v = 3 m/s
b. a = 6.t
c. kecepatannya nol saat t = 2√2 s
Penjelasan:
x=5-24t+t³
a. kecepatan saat t =3 detik
v = dx/dt = -24+3t²
v = -24 + 3.3² = -24 + 27
v = 3 m/s
b. percepatan setiap saat
a = dv/dt = 6.t
c. kecepatannya nol
v = -24+3t²
0 = -24+3t²
3t² = 24
t² =8
t = √8 = 2√2 s