Answer:
0.3847 m/s
Step-by-step explanation:
= Intensity =

d = Diameter = 20 cm
r = Radius =

c = Speed of light =

s = Distance = 100 m
P = Power = 22 MW
Pressure due to the laser is given by

Force is given by

Acceleration is given by

Speed of the block would be

The speed of the block is 0.3847 m/s