Elastic (E), Inelastic (1). or Perfectly Inelastic (P)? (There can be more than one.) 1. P Two objects combine together. 2. IP Momentum is conserved. 7. With Velcro. 8. Epsefore - Ep,fer and m,her= m,-2 3. IP Epsefre =Epater, EKEsefore # EKE,er %3! 9. If there is very loud sound, but they don't combine. 4. E Kinetic energy is conserved. 10 Kinetic energy is lost. 5. E Pool balls hitting each other. 11 E Newton's cradle 12 1 If the objects don't combine, but are damaged. An arrow shot at a target.

Answered: Image /qna-images/answer/e2c9f009-e900-4223-962e-263831bc4aaf.jpg

Answered: Elastic (E), Inelastic (1). or Perfectly Inelastic (P)? (There can be more than one.) 1. P Two objects combine together. 2. IP Momentum is conserved. 7. With…

College Physics

11th Edition

ISBN: 9781305952300

Author: Raymond A. Serway, Chris Vuille

Publisher: Cengage Learning

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Question

Number 7 to 12 you could have more then one answer choice

Elastic (E), Inelastic (1), or Perfectly Inelastic (P)? (There can be more than one.)
1. P
2.EIP Momentum is conserved.
Two objects combine together.
7.
With Velcro.
8.
Eprefore = Ep,fery and mater = m2
%3D
3. IL Epsefore = Epanter, EKEsefore # £KE,ner
9.
If there is very loud sound, but they don't combine.
4. E Kinetic energy is conserved.
10
11 E Newton's cradle
Kinetic energy is lost.
E Pool balls hitting each other.
1 If the objects don't combine, but are damaged.
5.
6
An arrow shot at a target.
(9. Inelastic collisions do not conserve kinetic energy. Does
this violate the Law of Conservation of Energy?
before
after
2 kg
+ + 4 kg
2 kg
4 kg
20. Why or why not?
5 m/s
3 m/s
v = ?
1.67 m/s
13. Calculate the final velocity of the 2 kg object.
21 If an object explodes when it collides, kinetic energy will
increase. Is this elastic or inelastic?
22 Where does the extra energy come from?
14, Calculate EKEpefore.
23. A 10 kg mass going 4 m/s to the right hits a 6 kg object
going 2 m/s left. The 10 kg ends up going 0.5 m/s left.
A) Find the velocity of the 6 kg object afterwards.
15. Calculate EKE,fer.
B) Was the collision elastic or inelastic?
16. Was kinetic energy conserved in the collision?
17. What kind of collision was it?
18. Do expect that the objects were damaged?
Force vs. Time
6
Graph 1
Graph 1 or 2?
Which force?
0 2
8.
10
12
14
24.
4
Shows + acceleration?
29.
Has the greatest + force?
Shows a weakening negative
force?
25.
Shows + Impulse?
30.
-2
26.
Has a negative area?
-4
31.
Shows a constant + force?
The object will slow down
in the positive direction.
27.
B
32.
Shows an object speeding
-6
up in the + direction.
Will slow down an object
moving to the left.
-8
28.
Shows a decreasing
+ acceleration.
33.
-10
Time (sec)
34. Find the impulse of Graph 1.
Graph 2
Force vs. Time
12
10
35. Find the impulse of Graph 2.
6
D
36. If a 2 kg object going 4 m/s feels the impulse in Graph 2, calculate its
final velocity.
4
2
0 12 3 45 6 7 89 10 11 12
Time (sec)
Copyright © 2011, C. Stephen Murray
cstephenmurray.com
Force (N)
Force (N)

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