How Fast Does a Ball Travel When Dropped from 5 Meters?

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Homework Help Overview

The discussion centers around a physics problem involving a ball dropped from a height of 5 meters, specifically focusing on determining the velocity of the ball upon reaching the ground. The subject area is kinematics, particularly the motion of objects under the influence of gravity.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore various approaches to the problem, including the use of energy concepts and the relationship between acceleration, velocity, and time. Questions arise regarding the factors influencing the ball's velocity and the relevance of gravitational acceleration.

Discussion Status

The discussion is active, with participants providing insights into different methods of analysis. Some guidance has been offered regarding the importance of acceleration in determining the ball's velocity, and there is an ongoing exploration of the implications of gravitational effects on motion.

Contextual Notes

There is a mention of the equation for velocity and the need to consider the effects of gravitational acceleration. Participants are also questioning the completeness of the information provided in the original problem statement.

hafiz ns
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Homework Statement


A ball is dropped from a height of 5meters
a) what is the velocity of the ball when it reaches the ground ? explain

Homework Equations


velocity = displacement /time

The Attempt at a Solution


the velocity is increasing due the gravitation of Earth (as 9.8m/s) the ball is at a height of 5meter
is there any factor related to this ?
 
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What do you mean "is there any factor related to this?". That IS the factor you want to take into consideration. You have the starting height and you have the acceleration due to gravity. You don't need anything else. Do you understand the equation of ballistic motion in a gravitational field?
 
hafiz ns said:

Homework Statement


A ball is dropped from a height of 5meters
a) what is the velocity of the ball when it reaches the ground ? explain

Homework Equations


velocity = displacement /time

The Attempt at a Solution


the velocity is increasing due the gravitation of Earth (as 9.8m/s) the ball is at a height of 5meter
is there any factor related to this ?
Welcome to PF hafiz ns.

There are several ways of approaching this: Using energy, you can determine the speed from the change in potential energy; By finding t first and finding average velocity from your equation (average velocity = displacement/time), then using the relationship between final and average velocities; You could also find t and use the relationship between acceleration, velocity and time.

AM
 
Last edited:
hafiz, to answer your question: yes, there is a factor to do with the acceleration. So think about how acceleration affects the velocity of the ball with time.
 

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