Answer:
Step-by-step explanation:
area of the shaded region = Area of triangle formed in rectangle with base (10 - 6 = 4) 4m and height 2 m + Area of triangle formed in square with base 2 m and height 6 m
E=mv²
divide both sides by m
E/m=v²
square root both sides
v=√E/m
m=2,E=64
v=√64/2
v=9/√2