Ball and gravitational force question

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Homework Help Overview

The problem involves two metal balls of the same size but different weights, released from a height of 5.0 meters. Participants are discussing the gravitational forces acting on the balls and their respective accelerations during free fall.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are examining the relationship between weight, gravitational force, and acceleration, questioning the original poster's assertions about the forces and accelerations of the two balls.

Discussion Status

Some participants have indicated that there are inaccuracies in the original poster's answers, suggesting a need for clarification on the concepts of force and acceleration. There is an ongoing exploration of definitions related to weight.

Contextual Notes

Participants are operating under the constraints of a homework assignment, which may limit the depth of discussion regarding the underlying physics principles.

Melchior25
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Homework Statement


Two metal balls are the same size but one weighs twice as much as the other. The balls are both released simultaneously from a height of 5.0 meters towards the ground. Which of the following must be true about the balls during the time they are falling? (Select all that apply.)

False The lighter ball starts out moving faster than the heavier ball.

False The heavy ball has an acceleration half as large as the lighter ball.

False The Earth exerts a gravitational force on the heavy ball that is twice as large as that on the lighter ball.

Ture The Earth exerts an equal gravitational force on both balls.

True The heavy ball exerts a force on the Earth that is twice as large as the force on the Earth exerted by the lighter ball.

Could someone please double check my answers and let me know if I got any wrong.

Thanks
 
Physics news on Phys.org
You've got two of them wrong.
 
Yes, I think you need to think about the difference between force and acceleration
 
And maybe remind yourself of the definition of weight ...
 

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