Which term describes an object moving in two dimensions as it is acted on by gravity?

a. projectile motion
b. motion
c. influence
d. constant velocity

The answer is: A. Projectile motion

Projectile motion involves movement in at least two dimensions (x and y).  

In projectile motions, the movement on horizontal axis (x) goes at a constant velocity while in the vertical axis (y), it goes at a variable velocity because of the acting of the gravity force acceleration and it's totally independent of the horizontal acceleration.

We can calculate the horizontal and vertical distance by using the following formulas:

Have a nice day!

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =