Answer:
The answer to your question is below
Explanation:
Data
m = 3 kg
vo = 6 m/s
vf = -8 m/s
Process
a= Initial kinetic energy
Eko = (1/2)mv²
Eko = (1/2)(3)(6)²
Eko = 54 J
b) Final kinetic energy
Eko = (1/2)(3)(-8)²
Eko = 96 J
c) Initial momentum
pi = (3)(6)
pi = 18 kg m/s
d) Final momentum
pf = (3)(-8)
pf = -24 kg m/s