Question

Tolong jawab pertanyaan no 5

Answer 1

MA : mB = 2 : 1
EkA : EkB = 1 : 8

v2...........?

EkA/EkB = (1/2 mA vA²)/(1/2 mB vB²)
1/8 = 2vA²/vB²
vB² = 8 x 2vA²
vB² = 16vA²
vB = √16vA²
vB = 4vA
vB : vA = 4 : 1
vB = 4 m/s ----> B
,
cmiiw... ^^

Answer 2

Ek = The kinetic energy
m = mass
V = rapidity
Ek = 1/2 mv²

ma : mb = 2:1
Ek a : Ek b = 1:8
Va = 1 m/s