Change in the magnitude of the ball's momentum.

AI Thread Summary
The discussion focuses on calculating the change in momentum of a 204g ball that falls and rebounds. The ball hits the floor at a speed of 2.57 m/s and rebounds at 2.10 m/s, resulting in a calculated change in momentum of 0.953 kg*m/s. Participants seek guidance on how to approach the calculation of momentum change, particularly considering both magnitude and direction. Clarifications on the formula and the significance of direction in momentum calculations are discussed. Understanding these concepts is essential for accurately determining the ball's momentum change.
superjen
Messages
26
Reaction score
0
A 204g ball falls vertically downward, hitting the floor with a speed of 2.57 m/s and rebounding upward with a speed of 2.10 m/s. Calculate the magnitude of the change in the ball's momentum.
Answer: 9.53E-01 kg*m/s


Calculate the change in the magnitude of the ball's momentum.

i really don't know how to go about the the second question. Any help? or tips?
 
Physics news on Phys.org
If you want to find the change in momentum taking into consideration the magnitude and direction what will be the answer?
 

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

Ambiguous question on momentum and how it works...
Replies
13
Views
1K
Work done during a collision -- Change in Kinetic Energy & change in Momentum
Replies
1
Views
2K
Golf club 🏌️and ball ⛳ impulse problem
Replies
19
Views
2K
Conservation of momentum (wrecking ball hits a stationary object)
Replies
10
Views
3K
Why momentum of a ball bounced off a wall increases twice fold?
Replies
9
Views
4K
Swinging Ball at Top of Circle: Forces & Energies
Replies
16
Views
2K
Oblique soccer shot calculation task
Replies
38
Views
3K
Impulse applied to a bouncing ball
Replies
13
Views
8K
How does a mass moving up a ramp change its velocity?
Replies
5
Views
1K
A ball bounces off a brick wall, Find the average acceleration
Replies
5
Views
5K

Hot Threads

Recent Insights

Back
Top