Initial Velocity without acceleration given.

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Homework Help Overview

The problem involves an antelope moving with constant acceleration, covering a distance of 74.0 m in 7.70 s, with a final speed of 14.6 m/s. The original poster seeks to determine the initial speed and acceleration.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster expresses confusion about how to apply kinematic formulas and substitute values correctly. Some participants provide formulas for kinematics and discuss the meaning of variables, such as displacement.

Discussion Status

Participants are exploring the application of kinematic equations and clarifying terminology. There is an indication that some guidance has been offered regarding the use of formulas, but no consensus or resolution has been reached.

Contextual Notes

There is a mention of the need for initial velocity and acceleration in the formulas, which may not be directly provided in the problem statement. The original poster also notes difficulty in typing formulas, suggesting a potential barrier to effective communication of ideas.

c0ld
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Homework Statement


An antelope moving with constant acceleration covers the distance 74.0m between two points in time 7.70s . Its speed as it passes the second point is 14.6 m/s.


Homework Equations


What is its speed at the first point?

What is the acceleration?

The Attempt at a Solution



I don't know how to type in the formula in here any help? I am kinda confused on how to substitue the formula.
 
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Hi c0ld

To type formula here, we use Latex. I don't know if there is a thread somewhere here about Latex tutorial, maybe you can use google.

About your question, the formulas for kinematics :

1) v = u+at

2) s=ut+\frac{1}{2}at^2

3) v^2=u^2+2as

v = final speed
u = initial speed

Apply those formulas and you'll find the answer :smile:
 
What does s mean? Displacement?


First point should be initial velocity. All the formulas you posted require acceleration.
 
Last edited:
Got the problem! It was ((2 * Displacement) / t) - final velocity
 

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