Object's Speed: Does Force Double Speed?

In summary, the conversation revolves around the concept of force and its relation to velocity and acceleration. The first part of the conversation discusses a scenario where an object is pushed with one pound of force, causing it to move at a speed of 3 miles per hour. Person B then pushes the object with the same force, expecting it to move at a speed of 6 miles per hour, but through trial and error, they realize that it still moves at 3 miles per hour. The conversation then shifts to a discussion about Newton's Second Law and the importance of calculating variables in scientific experiments. Person A shares their experiment with launching a rocket and the calculations they did, but they still did not get the desired result. They also mention the importance
  • #1
Max CR
122
0
An object is pushed with one pound of force by person A. This causes the object to move 3 miles per hour.

Person B then pushes the object with one pound of force also. Will the object move at 6 miles per hour?
 
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  • #2


What are your thoughts on the matter? :)

This problem is poorly worded, just so you know.
 
  • #3


I originally thought that it would move at 6 miles per hour, but through trial and error I can see that it will move only 3 miles per hour. I just wanted to get a confirmation.
 
  • #4


Does Newton's Second Law ring a bell?
 
  • #5


I suggest you calculate something. To answer your question: You're wrong.
 
  • #6


What is the relationship between force and acceleration and velocity?

Again, this problem is poorly worded as time is important in this question.
 
  • #7


Well, I just launched a rocket. Each rocket engine put out six pounds of force. There were four rocket engines. The rocket weighed 5 pounds. If four lit off at the same time, then there should have been 24 pounds of upward force. All four went off at the same time. The only problem is that the rocket did not get off of the launch pad.

When i did the math I added the amount of impulse. Each rocket produced 20 n/s of force. Since i had four going off at the same time, I did 4 x 20 = 80 n/s of force. However, thsi amount of force was not enoguh. It seems as if even though four rocket engiens went off at the same time, only one rocket engine would have gotten the job done in the same way.
 
  • #8


Max CR said:
Well, I just launched a rocket. Each rocket engine put out six pounds of force. There were four rocket engines. The rocket weighed 5 pounds. If four lit off at the same time, then there should have been 24 pounds of upward force. All four went off at the same time. The only problem is that the rocket did not get off of the launch pad.

When i did the math I added the amount of impulse. Each rocket produced 20 n/s of force. Since i had four going off at the same time, I did 4 x 20 = 80 n/s of force. However, thsi amount of force was not enoguh. It seems as if even though four rocket engiens went off at the same time, only one rocket engine would have gotten the job done in the same way.

By your post, I take it your in high school. I would advise you to record your experiments and report them and we can help you. I think you will learn more by trial and error than us showing you equations right now. Just don't blow your fingers off.
 
  • #9


I HAVE ALREADY LEARNED FROM TRIAL AND ERROR. I am just here to confirm my results! Please answer my question!
 
  • #10


Cyrus said:
I suggest you calculate something. To answer your question: You're wrong.

What exactly is wrong?
 
  • #11


Why would you ask us to confirm the results of your experiment? That doesn't make any sense. You should spend more time recording down the variables of what's involved in what you're doing.

Do you have any background in physics?
 
  • #12


If anybody can confirm my results for the sake of CONFIRMATION please let me know.
 
  • #13


How can we confirm your results when you don't answer our questions?

For one, Force isn't in N/s so what you told us was meaningless. How does your original question have anything to do with your experiment? Velocity and force are two different things.
 

FAQ: Object's Speed: Does Force Double Speed?

What is the relationship between force and speed?

The relationship between force and speed is directly proportional. This means that as the force acting on an object increases, its speed also increases.

Does doubling the force applied to an object always result in double the speed?

No, doubling the force applied to an object does not always result in double the speed. The amount of speed gained from a force depends on other factors such as the mass and shape of the object, as well as the presence of other forces such as friction.

Can an object's speed be doubled without increasing the force?

Yes, an object's speed can be doubled without increasing the force by reducing the object's mass. According to Newton's Second Law of Motion, the acceleration of an object is inversely proportional to its mass. Therefore, reducing the mass of an object will result in a higher acceleration and ultimately double the speed, without increasing the force.

Is the relationship between force and speed the same for all objects?

No, the relationship between force and speed is not the same for all objects. It depends on the mass and shape of the object, as well as the presence of other forces such as friction. For example, a small and light object may experience a larger increase in speed with the same force compared to a larger and heavier object.

How can we calculate an object's speed based on the force applied?

The speed of an object can be calculated using the formula speed = force/mass. This formula is based on Newton's Second Law of Motion, which states that force is equal to mass multiplied by acceleration. By rearranging the formula, we can calculate the speed of an object when the force and mass are known.

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