Answer:
The speed is the same as long as the reflection is regular.
Explanation:
This is because in regular reflection, the angle of incidence is equal to the angle of reflection in accordance with the second law of reflection.
Since speed of light depends on the angle of the light ray it makes with the reflecting surface, the speed is the same
Pressure = Force / Area.
Where pressure in in Pascals or N/m²
Force is in Newtons, Area is in m²
Pressure = 450 N / 2 m²
Pressure = 225 N/m² or 225 Pascals.
E = 0.5mv^2 = 0.5*44*10^2 = 2200J
