Find out the speed of an object

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Homework Help Overview

The problem involves a 10.0 kg box subjected to a constant force of 50.0 N, with an initial speed of 2.0 m/s as it passes the first timer. The box then travels a distance of 150 cm to a second timer, and the goal is to determine its speed at that point.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster expresses difficulty in proceeding due to the absence of time, despite knowing the distance. Some participants inquire about relevant equations for motion under constant acceleration, while others suggest using the equation Vf = Vi + at, noting the need for acceleration to apply it.

Discussion Status

Participants are exploring various equations related to motion and discussing the relationship between force and acceleration as per Newton's laws. There is an indication that some guidance has been offered regarding the equations of motion, but no consensus has been reached on a specific approach yet.

Contextual Notes

The discussion highlights a lack of explicit information about acceleration, which is necessary for solving the problem. The original poster's mention of being stuck suggests constraints in their understanding of the problem setup.

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Homework Statement


A 10.0 kg box is acted on by a constant force of 50.0 N. If it passes a first timer with a speed of 2.0 m/s and then travels 150 cm to a second timer, what would its speed be as it passes the second timer?

Homework Equations


I know usually to find out the speed of an object it is usually distance over time.
I know the distance being 150 cm
However as there is no time I've come to a complete stand still

The Attempt at a Solution


Stuck at the beginning, if someone would be kind enough to point me in the right direction please.
 
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What equations do you know related to motion under constant acceleration?
 
Vf = Vi + at
If that helps at all.
I have the distance, just not the acceleration to use that equation
 
wapleman said:
Vf = Vi + at
If that helps at all.
I have the distance, just not the acceleration to use that equation
You should be familiar with the SUVAT equations if you are expected to solve a problem like this.
See e.g. https://en.m.wikipedia.org/wiki/Equations_of_motion#Uniform_acceleration.
As for the acceleration, you are given enough information to find it. Which of Newton's laws relates force to acceleration.
 

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