This is what e=mc² means.
So rest energy is RH side of equation that is its mass times speed of light squared.
First of all the project motion is in the form of a parabolic path and it is a common practice that a paper airplane always follow a parabolic path, whenever it is thrown in the air, and gravity is acting upon the plane, like any other projectile.
I agree with the other comment
All three choices are correct.
Answer:
b
Explanation:
again ?
parabola = quadratic equation.
so, only b can be right : y = kx²