# Time formula with acceleration and velocity relationship

### How are acceleration, time and velocity related? | Socratic

Useful equations related to acceleration, average velocity, final velocity and distance t = time taken (s) en: acceleration velocity average final distance. Time is the medium for both velocity and acceleration to occur. Another relationship between the two is that when velocity is constant. Equations for speed, velocity and acceleration depend on change of position over time. Average speed uses the equation "speed equals.

In the formula for distance: How do you calculate for distance then? You'll have to specify this a little more before we can answer. Is there constant acceleration until that velocity is reached, then the acceleration stops? If so, I bet you could solve it yourself. Or is there, more plausibly, one of these other situations which also lead to limiting velocities: This applies to objects whose terminal velocities correspond to small Reynold's numbers.

This applies to objects whose terminal velocities correspond to larger Reynold's numbers, including typical large falling objects. Some other effect not in the list?

I think you're looking too much into my question. I don't understand what 'reynold's numbers' are. Or the time be if distance is given, but not time? I'm also wondering if the formula gets adjusted at all to compensate for a velocity limit? If the acceleration remains constant, you can't have a maximum velocity. The velocity will just get bigger and bigger in the direction of the acceleration.

So there must be some rule about how the acceleration stops or tapers off to give that maximum velocity.

## How are acceleration, time and velocity related?

Forget our remarks about Reynold's numbers etc, just let us know what's supposed to be going on physically. Is this about a ball dropped from a tower? A car driven by a law-abiding motorist? Say a meteor was spotted deep in space and the problem was to determine its trajectory, then the initial velocity would likely be the velocity it had when it was first observed.

But if the problem was about this same meteor burning up on reentry, then the initial velocity likely be the velocity it had when it entered Earth's atmosphere. The answer to "What's the initial velocity? This turns out to be the answer to a lot of questions.

- Describing motion - AQA
- Equations of Motion

The symbol v is the velocity some time t after the initial velocity. Take the case of the meteor. What velocity is represented by the symbol v? If you've been paying attention, then you should have anticipated the answer. It could be the velocity the meteor has as it passes by the moon, as it enters the Earth's atmosphere, or as it strikes the Earth's surface.

**Position Time Graph to Acceleration and Velocity Time Graphs - Physics & Calculus**

It could also be the meteorite's velocity as it sits in the bottom of a crater. Are any of these the final velocity? Someone could extract the meteorite from its hole in the ground and drive away with it. Probably not, but it depends. There's no rule for this kind of thing.

### BBC Bitesize - GCSE Combined Science - Describing motion - AQA - Revision 2

You have to parse the text of a problem for physical quantities and then assign meaning to mathematical symbols. The last part of this equation at is the change in the velocity from the initial value.

Recall that a is the rate of change of velocity and that t is the time after some initial event. Rate times time is change.