Answer:
10J
Explanation:
KE = (1/2)mv²
100J = (.5)(40kg)v²
v²=(100J)/(20kg)
v²= 5
KE = 5(.5)(4kg)
KE = 10J
i hope the pic helps u dear
The correct answer is D. Electrons in an atom that can bond with other atoms.
For those of you that need it still