Question

solve this question please help ​

Answer 1

SEE THE ATTACHMENT YOUR ANSWER IS THIS AND I THINK IT IS CORRECT

#TOGETHER WE GO FAR✔✔

Answer 2

as we know vp= v1+v2/2

v1=0 because wall cannot move  

v2 =speed of block  

v2+0/2 =v

v2 = 2v