What Is the Acceleration of a Rock at the Apex of Its Flight?

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Homework Help Overview

The discussion revolves around the acceleration of a rock at the apex of its flight when thrown vertically. The subject area pertains to kinematics and the effects of gravitational force on motion.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the relationship between gravitational force and acceleration, questioning whether other forces might influence the rock's acceleration at the apex.

Discussion Status

Some participants affirm the understanding that the acceleration due to gravity is 9.8 m/s² at the apex, while others emphasize the importance of considering all forces acting on the rock. There is a recognition of the role of gravity in this context.

Contextual Notes

Participants discuss the assumption that no other forces are acting on the rock, which may affect the acceleration at the apex.

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Homework Statement


When a rock is thrown straight into the air what is its acceleration at the top of its flight when its instantanoues velocity is zero?


Homework Equations



g=9.8N/Kg

The Attempt at a Solution


Is the accelration 9.8m/s
 
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The acceleration is dependent on the sum of all the forces acting on the rock. What you have is 9.8 from the force of gravity. As long as there are no other forces on the rock...
 
thanks a lot so that's right
 
yep. That is right.
 

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