Charlotte throws a paper airplane into the air, and it lands on the ground. which best explains why this is an example of projectile motion?

The plane height of the paper as a function of time is given by:

Where,

g: acceleration of gravity

t: time

vo: initial speed of the paper plane

me: initial height of the paper plane

Therefore, because the height of the plane as a function of time has a parabolic trajectory, then this is an example of a projectile movement.

this is an example of projectile motion because height as a function of time has a parabolic trajectory:

the diagram which shows forces as either balanced = same speed or unbalanced = accelerarting

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation: