Seekor cheetah berlari di padang rumput dengan kecepatan 2 m/s . cheetah mempercepat larinya menjadi 30 m/s dalam waktu 5 sekon untuk mengejar mangsanya . apabila massa cheetah 70 kg tentukan gaya yang dikerahkan cheetah
sater
Dik:
V0 = 2 m/s
Vt = 30 m/s
t = 5 s
m = 70 kg
F =..?
Vt = V0 + at
30 = 2 + a 5
30 - 2 = 5a
28 = 5a
a= 28/5
a = 5,6 m/s²
F = ma
F = 70 . 5,6
F = 392 N
anggasvara
Dik: V0 = 2 m/s Vt = 30 m/s t = 5 s m = 70 kg F =..?
Vt = V0 + at 30 = 2 + a 5 30 - 2 = 5a 28 = 5a a= 28/5 a = 5,6 m/s²
F = ma F = 70 . 5,6 F = 392 N
1 votes Thanks 4
sater
Dik:
V0 = 2 m/s
Vt = 30 m/s
t = 5 s
m = 70 kg
F =..?
Vt = V0 + at
30 = 2 + a 5
30 - 2 = 5a
28 = 5a
a= 28/5
a = 5,6 m/s²
F = ma
F = 70 . 5,6
F = 392 N
Dit : F = ...?
Jwb:
V0 = 2 m/s
Vt = 30 m/s
t = 5 s
m = 70 kg
F =..?
Vt = V0 + at
30 = 2 + a 5
30 - 2 = 5a
28 = 5a
a= 28/5
a = 5,6 m/s²
F = ma
F = 70 . 5,6
F = 392 N