Newtons applied to a constant velocity

In summary, the question is asking for the final velocity of a 1.0 kg object, initially moving at 2.0 m/s and acted upon by a force of 15 N for 6.0 seconds. Using the equation V = Vo + at, the solution can be found by finding the acceleration using Newton's 2nd law and plugging it into the equation.
  • #1
JohnnyB212
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0

Homework Statement



A 1.0 kg object, moving with a constant velocity of 2.0 m/s, is acted upon by a force of 15 N in the direction of the motion for 6.0 s. What is the velocity (in meters/second) of the object at the end of this time?


Homework Equations



I was thinking of using, V = Vo + at but at the same time it doesn't make sense to me in finding the solution



help!
 
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  • #2
JohnnyB212 said:

Homework Statement



A 1.0 kg object, moving with a constant velocity of 2.0 m/s, is acted upon by a force of 15 N in the direction of the motion for 6.0 s. What is the velocity (in meters/second) of the object at the end of this time?


Homework Equations



I was thinking of using, V = Vo + at but at the same time it doesn't make sense to me in finding the solution



help!
You are thinking correctly. You are trying to find V, you know V0, and you know t. You now just need to find 'a' from Newton's 2nd law.
 
  • #3


I would like to clarify that Newtons are not applied to velocity, but rather they are a unit of force. In this scenario, the force of 15 N is acting on the 1.0 kg object, causing it to accelerate. However, since the object is moving with a constant velocity of 2.0 m/s, we can assume that the acceleration is zero (since acceleration is the change in velocity over time). Therefore, the equation V = Vo + at is not applicable in this situation.

To find the final velocity of the object, we can use the formula V = d/t, where d is the distance traveled and t is the time taken. In this case, the distance traveled is equal to the initial velocity (2.0 m/s) multiplied by the time (6.0 s), which gives us 12.0 m. Therefore, the final velocity of the object at the end of the 6.0 s is also 2.0 m/s, since it is moving with a constant velocity.
 

What is a constant velocity?

A constant velocity is a type of motion where an object maintains a consistent speed and direction without any acceleration.

How is Newton's first law applied to constant velocity?

Newton's first law, also known as the law of inertia, states that an object will remain at rest or in motion at a constant velocity unless acted upon by an external force. In the case of constant velocity, there is no net external force acting on the object, so it will continue to move at a constant speed and direction.

Is force required for an object to maintain constant velocity?

No, if an object is already in motion at a constant velocity, it will continue to move at that speed and direction without any additional force being applied.

Can an object have a constant velocity while still experiencing external forces?

Yes, as long as the net external force on the object is equal to zero, it will continue to move at a constant velocity. This can occur if multiple forces are acting on the object in opposite directions, canceling each other out.

How is Newton's second law related to constant velocity?

Newton's second law states that the force acting on an object is equal to its mass multiplied by its acceleration. In the case of constant velocity, since there is no acceleration, the net external force on the object must be zero, as stated in the first law. This means that the mass of the object does not affect its constant velocity.

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