Food and drug administration (FDA) is used for protecting the public health in safety, security, drugs, biological products, and medicinal devices.
Explanation:
The U.S food and Drug Act tells about the sale of misbranded or adulterated food and drugs in interstate commerce and had a foundation for the nation's first consumer protection agency.
The federal law is passed to establish the quality standards for foods, drugs and medical devices manufactured and sold in U.S.
This act has a new consumer protection against unlawful cosmetics and medical devices and enhances the government's ability to enforce the law. The main goal of FDA is to make food and drug safe for public consumption.
To solve this problem we will apply the concepts related to the Impulse which can be defined as the product between mass and the total change in velocity. That is to say

Here,
m = mass
Change in velocity
As we can see there are two types of velocity at the moment the object makes the impact,
the first would be the initial velocity perpendicular to the wall and the final velocity perpendicular to the wall.
That is to say,


El angulo dado es de 45° y la velocidad de 25, por tanto


The change of sign indicates a change in the direction of the object.
Therefore the impulse would be as


The negative sign indicates that the pulse is in the opposite direction of the initial velocity.
Answer:
Yes, if the carts are travelling into opposite directions
Explanation:
The total momentum of a two carts system is the sum of the momenta of the individual carts:

where
m1, m2 are the masses of the two carts
v1, v2 are the velocities of the two carts
In order to have a total momentum of zero, we must have
(1)
Let's remind that velocity (and so, momentum as well) is a vector quantity: this means that it has a direction, so when summing together the momenta, we must also consider the sign of the velocity, depending on its direction.
Therefore, if the two carts are moving in opposite directions, the signs of the two velocities will be opposite. For example, we can have

This means that the condition in eq.(1) can be satisfied, provided that the two carts are travelling into opposite directions.
Well, it is not ultraviolet rays and I highly doubt it is visible light. I would say gamma rays. Hope this helps! :)
Yes because we often used it and takes long time to spent and forgot to eat on time.