Wedge and block initial momentum

[gracy]

The problem was poorly worded.

I have given my best.

 

[ehild]

h=1/2 MV^2(M+m)÷m^2 g.
g is in multiplication with m^2.

Then write it as h=1/2 MV^2(M+m)/(m^2 g)

 

[ehild]

I have given my best.

Well, your teacher had to be more clear.