# Acceleration formula with distance and velocity relationship

### Physics Equations Page

Speed can be thought of as the rate at which an object covers distance. In contrast, the average velocity is often computed using this formula velocity is the displacement or position change (a vector quantity) per time ratio. Acceleration. Velocity During Interval, Distance Traveled During Interval, Total Distance This equation can be used to calculate the acceleration of the object whose motion. These equations give relationship or formula between initial velocity, final velocity, acceleration, time taken and the distance traveled by the bodies.

So if you only know v and d, you can't solve for a unless you also know what t is i.

The answer given to this question is incorrect. The original answer apparently assumed that the velocity you knew was only the initial one.

- Distance Velocity Acceleration Formula
- Acceleration
- Speed and Velocity

In that case that answer is correct as stands. You seem to assume we know both the initial and final velocities.

### Distance Velocity Acceleration Formula | Physics Equation of Motion | TutorVista

So of course if you know two velocities you know more than if you just know one. 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.

## Equations of Motion

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?

Consider the two data tables below. In each case, the acceleration of the object is in the positive direction. In Example A, the object is moving in the positive direction i.

When an object is speeding up, the acceleration is in the same direction as the velocity. Thus, this object has a positive acceleration. In Example B, the object is moving in the negative direction i.

**Position, Velocity, Acceleration using Derivatives**

According to our general principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity. Thus, this object also has a positive acceleration. This same general principle can be applied to the motion of the objects represented in the two data tables below.

In each case, the acceleration of the object is in the negative direction. In Example C, the object is moving in the positive direction i. According to our principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity.

Thus, this object has a negative acceleration. In Example D, the object is moving in the negative direction i.

Thus, this object also has a negative acceleration. Observe the use of positive and negative as used in the discussion above Examples A - D.

In physics, the use of positive and negative always has a physical meaning. It is more than a mere mathematical symbol. As used here to describe the velocity and the acceleration of a moving object, positive and negative describe a direction. Both velocity and acceleration are vector quantities and a full description of the quantity demands the use of a directional adjective. North, south, east, west, right, left, up and down are all directional adjectives.

Consistent with the mathematical convention used on number lines and graphs, positive often means to the right or up and negative often means to the left or down.