mv=(m+M)*u
u=mv/(m+M)
E=mv^2/2=(m+M)u^2/2+Q
Q=mv^2/2-(m+M)u^2/2=mv^2/2-(m+M)(mv/(m+M))^2/2=
=mv^2/2*(1-m/(m+M))=mv^2/2*(M/(m+M))
Q/E=mv^2/2*(M/(m+M)) : mv^2/2 =M/(m+M)=3/(2+3)=3/5
ответ Е)
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
mv=(m+M)*u
u=mv/(m+M)
E=mv^2/2=(m+M)u^2/2+Q
Q=mv^2/2-(m+M)u^2/2=mv^2/2-(m+M)(mv/(m+M))^2/2=
=mv^2/2*(1-m/(m+M))=mv^2/2*(M/(m+M))
Q/E=mv^2/2*(M/(m+M)) : mv^2/2 =M/(m+M)=3/(2+3)=3/5
ответ Е)
v - начальная скорость одного тела
u - конечная скорость двух тел