Magnitude of change in linear momentum

In summary, the magnitude of change in linear momentum refers to the amount of change in an object's momentum over time. It is calculated by multiplying the object's mass by its change in velocity. The significance of this magnitude is that it determines the force applied to an object. The concept of conservation of momentum is related to this magnitude, as it states that the total momentum of a closed system remains constant. Finally, the magnitude of change in linear momentum affects an object's motion by determining the amount of force and acceleration it experiences.
  • #1
studypersist
5
0

Homework Statement



A 0.70 kg ball is moving horizontally with speed of 9.6 m/s when it strikes a vertical wall. The ball rebounds with speed of 1.3 m/s. What is the magnitude of the change in linear momentum of the ball?


Homework Equations



Dp = mv(f) - mv(i)

The Attempt at a Solution



I solved for mv(f) and mv(i). Solved for Dp which I got -5.81 which is wrong.
 
Physics news on Phys.org
  • #2
Hint: The initial and final velocities point in opposite directions.
 
  • #3
-.91 - 6.72 = -7.63

Is the answer positive because magnitude is positive?
 
  • #4
That is correct.
 

1. What is the definition of "magnitude of change in linear momentum"?

The magnitude of change in linear momentum refers to the amount of change that occurs in an object's momentum over a certain period of time. It is a measure of how much an object's velocity and mass change in a given direction.

2. How is the magnitude of change in linear momentum calculated?

The magnitude of change in linear momentum is calculated by multiplying the mass of an object by its change in velocity. This can be represented by the formula: Δp = mΔv, where Δp is the magnitude of change in linear momentum, m is the mass of the object, and Δv is the change in velocity.

3. What is the significance of the magnitude of change in linear momentum?

The magnitude of change in linear momentum is significant because it is directly related to the amount of force that is applied to an object. The greater the magnitude of change in momentum, the greater the force exerted on the object.

4. How is the concept of conservation of momentum related to the magnitude of change in linear momentum?

The concept of conservation of momentum states that the total momentum of a closed system remains constant over time. This means that in a collision or interaction between two objects, the magnitude of change in linear momentum of one object will be equal and opposite to the magnitude of change in linear momentum of the other object, resulting in a constant total momentum for the system.

5. How does the magnitude of change in linear momentum affect the motion of an object?

The magnitude of change in linear momentum affects an object's motion by determining the amount of force and acceleration it experiences. The greater the magnitude of change in momentum, the greater the force applied to the object and the greater its change in velocity, resulting in a larger change in its position or direction of motion.

Similar threads

  • Introductory Physics Homework Help
Replies
6
Views
746
  • Introductory Physics Homework Help
Replies
7
Views
203
Replies
1
Views
488
  • Introductory Physics Homework Help
Replies
9
Views
2K
  • Introductory Physics Homework Help
Replies
6
Views
844
  • Introductory Physics Homework Help
Replies
19
Views
951
  • Introductory Physics Homework Help
Replies
10
Views
891
  • Introductory Physics Homework Help
Replies
12
Views
2K
  • Introductory Physics Homework Help
Replies
2
Views
2K
  • Introductory Physics Homework Help
10
Replies
335
Views
7K
Back
Top