v
=
v
1
+
v
2
=
25
+
27
,
5
=
52
,
5
m
/
s
v
=
v
1
+
v
2
=
25
+
27
,
5
=
52
,
5
m
/
s
Close
Log in
Books
Repository
eAnswer
ePortfolio
Close
Log in
Books
Repository
eAnswer
ePortfolio
Log in
New user
OK
Error
Forgot?
Log in
Register
Recover
OK
Error
Change