How does the velocity of a freely falling body change with time?

Answer 1

No. Velocity is speed (distance per unit of time) and in a given direction. Velocity has a vector associated with it. It has directionality. Any acceleration that changes the direction in which a body is moving will alter its velocity. A car going around a curve is experiencing lateral force and is moving sideways while moving forward. The net motion puts the vehicle through an arc. With no change of pressure on the accelerator pedal and no brake, the speed is constant, but the velocity of the car, the speed with (and) the direction vector of the car, will change. It may seem like a minor "technical" thing, but as the concepts are worked with, they become clear and "lock in" for easy application in the future. Speed if defined as the distance travelled divided by the time traveled. i.e If you walk 12 kilometer in three hours, your speed is 4 kilometers per hour.

Acceleration is a change in speed. i.e 70kph to 80kph.

Velocity not only tell us the speed but the direction also. i.e 125kph by NNE

Answer 2

Do you now that velocity is inversely proportional to time and directly proportional to the distance covered.Try to imagine you are riding on a vehicle on a straight path the shorter the time you covered the greater the velocity you applid.

Answer 3

Yes. That's the definition of acceleration: Any change in velocity ... speed, direction, or both.

Please note:

There may be a lot more behind your question than what you had in mind.

-- 'Velocity' is NOT speed, and 'accelerating' does NOT mean speeding up.

-- 'Velocity' means speed AND the direction it's in. If the direction changes,

velocity changes, and another name for that is 'acceleration'.

-- Acceleration can mean speeding up. It can also mean slowing down, or even

moving along a curve without any change in speed.

Answer 4

It changes downward, at a rate of 9.8 meters/second every second (assuming normal Earth gravity), downward. For example, if the object is already falling downward, its speed will increase by that rate.

Answer 5

No. The definition of acceleration is a change in velocity, i.e. speed and/or direction.

So constant velocity means zero acceleration.

Answer 6

Yes, that's the whole idea of acceleration. To be precise, acceleration is defined as the rate of change of velocity - how fast velocity changes. In symbols:

a = dv/dt