This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A 1.0-kg object moving 9.0 m/s collides with a 2.0-kg object moving 6.0 m/s in a direction that is ... (Read 232 times)

lak

  • Hero Member
  • *****
  • Posts: 546
on: Jul 28, 2018
A 1.0-kg object moving 9.0 m/s collides with a 2.0-kg object moving 6.0 m/s in a direction that is perpendicular to the initial direction of motion of the 1.0-kg object. The two masses remain together after the collision, and this composite object then collides with and sticks to a 3.0-kg object. After these collisions, the final composite (6.0-kg) object remains at rest. What was the speed of the 3.0-kg object before the collisions?
 a. 15 m/s
  b. 10 m/s
  c. 5.0 m/s
  d. 20 m/s
  e. 25 m/s

Question 2

A 5.0-g particle moving 60 m/s collides with a 2.0-g particle initially at rest. After the collision each of the particles has a velocity that is directed 30 from the original direction of motion of the 5.0-g particle. What is the speed of the 2.0-g particle after the collision?
 a. 72 m/s
  b. 87 m/s
  c. 79 m/s
  d. 94 m/s
  e. 67 m/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

xMRAZ

  • Sr. Member
  • ****
  • Posts: 363
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


lak

  • Hero Member
  • *****
  • Posts: 546
Reply #2 on: Jul 28, 2018
Thanks


xMRAZ

  • Sr. Member
  • ****
  • Posts: 363
Reply #3 on: Jul 28, 2018
Welcome :)


« previous next »
 

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Pupil assessment; B, moving penlight directly in front of pupil. Pupil assessment; B, moving penlight directly in front of pupil.
These photos show a rat burying a test object from which it has just received a single mild shock. These photos show a rat burying a test object from which it has just received a single mild shock.
Apply fascial mobilization in one direction using a palm. Stand to the side of the face cradle; ... Apply fascial mobilization in one direction using a palm. Stand to the side of the face cradle; ...
Apply direct pressure under the zygomatic arch. Moving laterally, gently press up and under the ... Apply direct pressure under the zygomatic arch. Moving laterally, gently press up and under the ...
Stretch arm overhead. Stand to the side facing the same direction as the recipient. Hold onto the ... Stretch arm overhead. Stand to the side facing the same direction as the recipient. Hold onto the ...
Open palmar friction moving back and forth over the lumbar and thoracic regions. Open palmar friction moving back and forth over the lumbar and thoracic regions.
Video: Energy sources - types

For a complete list of videos, visit our video library