Connect with a community that values knowledge and expertise on IDNLearn.com. Join our knowledgeable community and access a wealth of reliable answers to your most pressing questions.
Answer:
10J
Explanation:
KE = (1/2)mv²
100J = (.5)(40kg)v²
v²=(100J)/(20kg)
v²= 5
KE = 5(.5)(4kg)
KE = 10J