Question

a freely falling object is an example of?
A.newt0ns first law
B.newt0ns 2nd law
C. Archimedes principle

Answer 1

@AllTehMaffs

Answer 2

what do ya think?

Answer 3

b

Answer 4

Newton's first law is that an object with no external force has a constant velocity.

Newton's second law is that the net force on an object is equal to its mass times acceleration.

Archimedes' principle is that the amount of upward force of a submerged object is equal to the weight of the fluid the body displaces.


You are correct!!

Answer 5

ty :)

Answer 6

^^ welcome

Answer 7

fmdc papers yaeh

Answer 8

1st law

Answer 9

An object in freefall is by definition being accelerated only the force due to gravity, so its velocity is not constant.

Newton's first law is the law of inertia - an object with no external outside force will travel at a constant velocity or remain at rest.

\[\sum F_{object} = 0 \ \ \ \ ; \ \ \ \ a=frac{\mathrm{d}\textbf v}{\mathrm{d}t} = 0\]

Newton's second law is that the acceleration of an object is in the direction of its net force and is inversely proportional to its mass.

\[\sum \textbf F_{\textrm{on falling object}} = -mg\hat {\textrm{ r}} = m\textbf{a}\]
\[ g=9.81m/s^2 \ \textrm{is the acceleration of a massive object towards the center of Earth}
\\ \hspace{90px} \textrm{ due to Earth's gravitational field. It is acting in the -r direction.}\]
\[ \therefore \ \ \textbf a=-9.81m/s^2 \ \hat {\textbf r} \]

Showing there is a net force on an object in free fall, so Newton's first law is not applicable.

Answer 10

Thanks

Answer 11

^_^