Jawaban:

64 meter

Penjelasan:

DIkethaui :

mA = 3 kg

tA = 6 s

vA = 30 m/s

mB = 5 kg

vB = 10 m/s

tB = 4 s

Ditanyakan :

sB .. ?

Jawab :

mencari percepatan benda A

v = v0 + at

30 = 0 + a(6)

30 = 6a

a = 30/6

a = 5 m/s^3

mencari gaya A

F = ma

F = 3(5)

F = 15 N

mencari gaya B

FA = FB

FB = 15 N

mencari percepatan B

F = ma

15 = 5a

a = 15/5

a = 3 m/s^2

mencari kecepatan selama 4 detik

v = v0 + at

v = 10 + 3(4)

v = 10 + 12

v = 22 m/s

mencari jarak

v^2 = v0^2 + 2as

22^2 = 10^2 + 2(3)s

484 = 100 + 6s

6s = 484 - 100

6s = 384

s = 384/6

s = 64 m

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