An automobile is traveling at 60 ft/s (about 40 mi/h or 65 km/h). If the reaction time is 0.5 s, how far does the automobile travel in this time?

9.03 metres

Explanation: Given that an automobile is traveling at 60 ft/s (about 40 mi/h or 65 km/h). If the reaction time is 0.5 s.

From the question above,

Speed = 65 km/m

Time = 0.5 s. Convert the second to hour.

0.5 / 3600

Speed = distance/time

65 = distance ÷ 0.5 /3600

65 = distance × 3600 /0.5

65 = 7200 × distance

Distance = 65/7200

Distance = 9.03 × 10^-3 Km

Convert the distance to metre by multiplying it by 1000

Distance = 9.03 × 10^-3 × 1000

Distance = 9.03 m

where are the vectors ?

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