Kinematics Homework Question- Deriving an expression

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Homework Help Overview

The discussion revolves around a kinematics problem involving the derivation of an expression related to the equations of motion. Participants express uncertainty about how to initiate their approach using the relevant formulas.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss their struggles with starting the problem and express a need for guidance on applying the equations of motion. Some suggest writing equations for the coordinates of a projectile as a function of time, while others mention the need to derive a time-independent equation.

Discussion Status

There is an ongoing exploration of different approaches to the problem, with participants seeking starting points and clarification on how to utilize the equations of motion effectively. Some guidance has been offered regarding the trajectory of a horizontal projectile and the formulation of position equations.

Contextual Notes

Participants note the absence of specific information, such as the time of flight, which complicates their attempts to solve the problem. The discussion is framed within the constraints of homework rules that encourage sharing attempts.

mackenziesmith
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Homework Statement
KINEMATICS HOMEWORK HELP
Relevant Equations
5 Equations of Motion Formulas
I have been attempting this physics problem for a while now. I am not sure how to begin to attempt this problem with the equations of motion formulas.
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mackenziesmith said:
Homework Statement: KINEMATICS HOMEWORK HELP
Homework Equations: 5 Equations of Motion Formulas

I have been attempting this physics problem for a while now. I am not sure how to begin to attempt this problem with the equations of motion formulas.
View attachment 249676
Per forum rules, please post some attempt.
 
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haruspex said:
Per forum rules, please post some attempt.
I am not sure how to approach this problem with the given formulas. If anyone is able to help with a starting point, I would really appreciate it! :)
 
mackenziesmith said:
I am not sure how to approach this problem with the given formulas. If anyone is able to help with a starting point, I would really appreciate it! :)
Write equations for the coordinates of the ball as a function of time.
 
mackenziesmith said:
Homework Statement: KINEMATICS HOMEWORK HELP
Homework Equations: 5 Equations of Motion Formulas

I have been attempting this physics problem for a while now. I am not sure how to begin to attempt this problem with the equations of motion formulas.
View attachment 249676
Use equation of trajectory for horizontal projectile
 
Start with kinematic equations for position as a function of acceleration and initial velocity. Since the problem does not specify a time of flight, you must solve these equations to be time-independent. Essentially, just find an equation for ##t## and plug it into the other equation and solve for the initial horizontal velocity.
 
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Δv(x)=Δv(y)=2v(x)
 

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