The ball's acceleration while it is contact with the floor is 98.4m/s²
<u>Explanation:</u>
V1 = -√(2gh1) = -4.85 m/s
V2 = √(2gh2) = 4.1056 m/s
dV = V2 - V1 = +8.9556 m/s
a = dV/dt = 8.9556/0.091 = 98.4 m/s²
Therefore, the ball's acceleration while it is contact with the floor is 98.4m/s²
Light rays change direction when they hit a mirror. The phenomenon is known as reflection. Light rays travels in a straight light. They strike the surface of the mirror at a particular angle called incident angle. It is the angle between the ray and normal at the point of contact. The rays leaves the surface making the same angle with the normal called reflection angle but in different direction.
That the radio wave has more to it
Divide 8.5by 10then *100equals 85%