Abicycle, a motorcycle, a sports car, and a pickup truck are traveling at the same velocity. which vehicle requires the greatest amount of force to change its velocity?
a. a bicycle
b. a motorcycle
c. a sports car
d. a pick-up truck

D.a pick-up truck

Explanation:

Force required to move an object is given by

F = ma

Where,

m = Mass

a = Acceleration

Here, the acceleration is constant as all the velocities are same so the mass varies the force required. From the equation it can be seen that force varies directly with mass i.e., if mass increased the force will also be increase.

Out of the options here the pick up truck has the most mass so the amount of force will be greatest here.

it breaks and dirupture other materials and other sencews from the bottom

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