Momentum A ball weighing .05 kg strikes a 1000 kg stationary wall at 30

m/s. According to Newton's Third Law, which of these must

be true?

Select one:

The total momentum of the system after impact is 30000 kg • m/s

The total momentum of the system before impact was 15 kg. m/s

The wall moves away from the ball at 30 m/s.

The total momentum of the system before impact was 1.5 kg . m/s

he kicked it 10 feet straight up into the air? i think this works.

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