# Basic question regarding gravitational acceleration

Hello,

I have a very basic physics question. If I lift a body of mass 1 kg into air, it will be attracted by a downward force F = mg = 98.1 N.

What I want to know is what would be the downward velocity of the object? If I release an object of mass 1 kg from a height of 1 m, with what equation can I find the velocity of the object or the time needed by the object to reach the earth?

Thank you.

Related Other Physics Topics News on Phys.org
Doc Al
Mentor
I have a very basic physics question. If I lift a body of mass 1 kg into air, it will be attracted by a downward force F = mg = 98.1 N.
I think you mean 9.81 N.

What I want to know is what would be the downward velocity of the object? If I release an object of mass 1 kg from a height of 1 m, with what equation can I find the velocity of the object or the time needed by the object to reach the earth?
Ignoring complications such as air resistance, the acceleration of a falling body is constant. So you can use any of the standard constant acceleration kinematic formulas. For example:

V = gt (gives the velocity as a function of time)
D = 1/2 gt2 (gives the distance as a function of time)