A 380 g ball falls vertically downward, hitting the floor with a speed of 3.5 m/s and then rebounding upward with a speed of 30 m/s
a) What was the ball's momentum just before it hit the floor? (Do not include the
units in the answer)
Your answer
b) What was the ball's momentum just after it rebounded from the floor? (Do not
include the units in the answer)
Your answer
c) What was the ball's change in momentum during its impact with the floor?(Do
not include the units in the answer)
Your answer

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

the maxium height is 34m/s