How Does Impulse Affect Particle Velocity?

  • Thread starter Thread starter DollarBill
  • Start date Start date
AI Thread Summary
The discussion centers on calculating the final velocity of a particle after a force is applied. Initially, the particle has a velocity of -6.3 m/s and a mass of 5.2 kg. The impulse applied is 42 Ns, leading to the equation 42 = 5.2(vF + 6.3). Solving this results in a final velocity (vF) of approximately 1.777 m/s. The calculations and method used are confirmed to be correct.
DollarBill
Messages
44
Reaction score
0

Homework Statement


http://img401.imageshack.us/img401/46/impulsemw6.jpg

Before the force is applied (t<0), the particle moves along the x-axis with a velocity of -6.3 m/s.

Find the velocity of the particle after the force stops acting on it.

The particle has a mass of 5.2 kg

Homework Equations


j=\Deltap
\Deltap=0

The Attempt at a Solution


j=42Ns

j=\Deltap
42=mvF-mv0
42=(5.2)vF-5.2(-6.3)
9.24=5.2(v)F
vF=1.777 m/s
 
Last edited by a moderator:
Physics news on Phys.org
Your method looks good.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Impulse and Average Force. Ball by the Wall.
Replies
5
Views
6K
How Does Impulse Affect Acceleration and Tension in a Disk-Particle System?
Replies
30
Views
5K
How Does Impulse Relate to Momentum Change in Physics Problems?
Replies
7
Views
2K
How Does Projectile Motion Affect a Ball Thrown Upward from a Building?
Replies
3
Views
10K
Horizontal impulse on a ball at rest on a plane (with friction)
Replies
14
Views
3K
How Does the Coriolis Force Affect Particle Motion in a Rotating System?
Replies
3
Views
2K
How Is Impulse Calculated in Baseball Physics?
Replies
5
Views
2K
Is the Impulse of Force Calculated Correctly in This Bullet and Block Collision?
Replies
25
Views
3K
Which Material Exerts Greater Impulse When Jumping Off a Dock?
Replies
1
Views
4K
How long to fire a small rocket. Impulse problem.
Replies
4
Views
3K

Hot Threads

Recent Insights

Back
Top