How do you tell the speed of an object in freefall?

Question

if there is no time or distance given

it did not give the time so give me the forula

Answer 1

If you know the intial condition - velocity - and the time since it went into freefall - you can calculate the velocity by adding the velocity added by gravitational accelleration.

V2=Vinitial + gT

Just remember to keep track of directions, lateral movement as opposed to vertical movement, and you can figure it out.

Answer 2

Freefall is when the sum of gravitational forces and inertial forces is 0. So strictly speaking, the speed of an object depends on the conditions. In space, any object not acted upon by gravity is in freefall as long as no acceleration force is applied to it, so it's speed is relative to other objects.
In the earths gravitational field, freefall only happens at the appex of a parabolic curve (such as throwing a ball into the air, when the force of the throw (the balls' inertia) and the force of the earths gravity cancel each other out for a split second.
This presents some problems, If the object is thrown straight up, the apex is easily seen as being a moment when the ball stops moving, but if the object is thrown( or fired like a cannon ball) at an angle, it is hard to see the appex of the porabola. However, there is still a split second where the cannon ball is no longer traveling up or down, while it still may appear to be traveling side to side, But, because this moment is infinitesimally small, I would say it's safe to say that the cannon ball is not moving at that moment.
So an object within the earths gravitational field is only in freefall when it's speed is 0.
Now in skydiving, freefall is used (innaccuratly) to describe any time that the diver is falling to the earth, without the use of a parachute, or without being in the plane, and the divers speed depends on their drag coefficiant, vs. the force of accelaration due to gravity.

Answer 3

The 1st answer's definition of freefall is correct; it's the state of having only gravitational, no external forces, applied. However, an object doesn't have to be at the peak of its trajectory to be in freefall. It's in freefall at any time after the initial external accelerating force (e.g., the force of a rocket) stops and before it returns to the ground (provided no other forces act en route).
The freefall speed is only meaningful when defined in relation to a particular body or coordinate system. You have to know something, such as its initial velocity and the time and duration and value of gravitational acceleration, if any. If no time is given then you may be being asked what the velocity is as a function of time. In that case it's the initial velocity plus the time integral of the acceleration.

Answer 4

Physics is not the process of memorizing formulas.

You must have been given some data. If not time or distance, then what? Whatever data you have, consider how that data is related to other kinematics in the problem, such as the constant rate of acceleration due to gravity and speed.