What Happens When a Fast-Moving Cube Collides with a Stationary Ball on a Table?

  • Thread starter Thread starter Phyzix
  • Start date Start date
  • Tags Tags
    Impulse
AI Thread Summary
A 5 kg stationary ball is struck by a 0.5 kg cube traveling at 26 m/s on a table. The discussion focuses on calculating the total impulse given to the ball, its velocity post-collision, the cube's speed and direction afterward, the kinetic energy lost during the collision, and the landing positions of both objects. One participant initially sought help but later resolved their questions independently. Another participant requested clarification on solving the impulse calculation, indicating the use of the area under a graph to find impulse. The conversation highlights the principles of momentum and energy conservation in collisions.
Phyzix
Messages
10
Reaction score
0
10) A 5 kg ball sits motionless at the edge of a 2m long 1.2m tall table. A cube of mass 0.5kg plows into it head-on at a speed of 26m/s

There is a graph below in the attachments about the collision.



a) Determine the total impulse given to the ball. b) Determine the velocity of the ball immediately after collision. c) Determine the speed and direction of the cube immediately after collision. d) Determine the KE lost during collision. e) Determine where each of the two objects lands on the floor after collision.

a) Ft=mv Ft=.5(26) Ft=13 right?
b-e?


UPDATE: After conferring with classmates I've figured it out...no need for help =) thanks!
 

Attachments

  • physthing.JPG
    physthing.JPG
    11.6 KB · Views: 440
Last edited:
Physics news on Phys.org
Question

I have the same question. Can someone explain how to go about solving this?
thanks.
 
attempted

a) impulse = force*time. The area of the graph under the function = 20 Newtons*sec.
 

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

Collision of rolling billiard balls
Replies
4
Views
5K
Calculating Impulse & Kinetic Energy of Collision
Replies
1
Views
2K
What is the Correct Height to Hit a Billiard Ball for Rolling Without Slipping?
Replies
13
Views
13K
Analyzing Collisions and Energy Transfer in AP Mechanics Problems
Replies
7
Views
5K
What is the impulse exerted on objects A and B during their collision?
Replies
2
Views
15K
Bocce Ball Impulse & Kinetic Energy Calculations
Replies
5
Views
5K
Collision of 2 balls of different masses traveling opposite direction
Replies
7
Views
3K
Balls and clay blob - Collision problems
Replies
8
Views
5K
What Is the Impulse Imparted to a Soccer Ball When 'Heading' It?
Replies
3
Views
8K
Elastic Collision Problem: Maximum and Minimum Speeds for Colliding Balls
Replies
6
Views
1K

Hot Threads

Recent Insights

Back
Top