Question

Two blocks A (5kg) and B(2kg) attached to the ends of a spring constant
1120N/m are placed on a smooth horizontal plane with the spring undeformed.
Simultaneously velocities of 3m/s and 10m/s along the line of the spring in the
3m/s
10m/s
same direction are imparted to A and B
then
(A) when the extension of the spring is maximum the velocities of A and B are zero.
(B) the maximum extension ofthe spring is 25cm.
(C) maximum extension and maximum compression occur alternately,
(D) the minimum speed of B is 0.​

Answer 1

Answer:

(B) the maximum extension ofthe spring is 25cm

Explanation:

pi=pf

find vc? from hare and than

Ei=Ef

find x=?