Use the impulse-momentum theorem to find how long the sled takes to travel

In summary, the impulse-momentum theorem states that the change in momentum of an object is equal to the impulse applied to it. It can be used to calculate the travel time of a sled by considering the force applied, mass of the sled, and initial and final velocities. This theorem can be applied to any type of sled, but it may have limitations such as assuming a constant force and no external forces acting on the sled.
  • #1
lanky011
2
0
A sled slides along a horizontal surface on which the coefficient of kinetic friction is 0.40. Its velocity at point A is 7.4 m/s and at point B is 3.0 m/s. Use the impulse-momentum theorem to find how long the sled takes to travel from A to B.

(7.4)(.4)=2.96
(3)(.4)=1.2

(2.96)^2+(1.2)^2=10.2016

√10.2016= 3.19

But that's not the right answer
 
Physics news on Phys.org
  • #2
I'm not really sure what you did..but try using the impulse momentum theorem and then remember that impulse=j=F*(delta t)
 

1. What is the impulse-momentum theorem?

The impulse-momentum theorem states that the change in momentum of an object is equal to the impulse applied to it. This means that the force applied to an object over a certain amount of time will result in a change in the object's velocity.

2. How does the impulse-momentum theorem relate to a sled?

The impulse-momentum theorem can be applied to a sled to calculate how long it will take for the sled to travel a certain distance. This is because the force applied to the sled, combined with the sled's mass and velocity, will determine its change in momentum and therefore its travel time.

3. What information do I need to use the impulse-momentum theorem to find the travel time of a sled?

In order to use the impulse-momentum theorem to find the travel time of a sled, you will need to know the force applied to the sled, the mass of the sled, and the initial and final velocities of the sled.

4. Can the impulse-momentum theorem be used for any type of sled?

Yes, the impulse-momentum theorem can be used for any type of sled as long as the necessary information is known. This includes traditional sleds, as well as more complex sleds used in scientific experiments or sports.

5. Are there any limitations to using the impulse-momentum theorem for finding sled travel time?

While the impulse-momentum theorem is a useful tool for calculating sled travel time, it does have some limitations. It assumes that the force applied to the sled is constant and that there are no other external forces acting on the sled. In real-world situations, there may be other factors that can affect the sled's travel time.

Similar threads

  • Introductory Physics Homework Help
Replies
7
Views
378
  • Introductory Physics Homework Help
Replies
2
Views
1K
  • Introductory Physics Homework Help
Replies
8
Views
3K
  • Introductory Physics Homework Help
Replies
14
Views
1K
Replies
1
Views
562
  • Introductory Physics Homework Help
Replies
19
Views
1K
  • Introductory Physics Homework Help
Replies
1
Views
1K
  • Introductory Physics Homework Help
Replies
3
Views
1K
  • Introductory Physics Homework Help
Replies
6
Views
2K
  • Introductory Physics Homework Help
Replies
13
Views
6K
Back
Top