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

Author Question: A 1.0-kg object moving in a certain direction has a kinetic energy of 2.0 J. It hits a wall and ... (Read 48 times)

naturalchemist

  • Hero Member
  • *****
  • Posts: 542
on: Jul 29, 2018
A 1.0-kg object moving in a certain direction has a kinetic energy of 2.0 J. It hits a wall and comes back with half its original speed. What is the kinetic energy of this object at this point?
 
  A) 2.0 J
  B) 1.0 J
  C) 0.50 J
  D) 0.25 J
  E) 4.0 J

Question 2

A rock is dropped from the top of a vertical cliff and takes 3.00 s to reach the ground below the cliff.
 
  A second rock is thrown vertically from the cliff, and it takes this rock 2.00 s to reach the ground below the cliff from the time it is released. With what velocity was the second rock thrown, assuming no air resistance?
  A) 4.76 m/s upward
  B) 5.51 m/s downward
  C) 12.3 m/s upward
  D) 4.76 m/s downward
  E) 12.3 m/s downward
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mohan

  • Sr. Member
  • ****
  • Posts: 362
Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


naturalchemist

  • Member
  • Posts: 542
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Light rays coming from an object to the retina. Light rays coming from an object to the retina.
great wall great wall
Renewable Energy Efforts Renewable Energy Efforts
Free Energy Rules: The Second Law in Open Systems Free Energy Rules: The Second Law in Open Systems
Animated The one-way flow of energy and cycling of materials in the world of life Animated The one-way flow of energy and cycling of materials in the world of life
How much energy is needed to heat 77.0g H2O(s) from -10.0 C to 0.0 C? How much energy is needed to heat 77.0g H2O(s) from -10.0 C to 0.0 C?
Video: Plant Defense Mechanisms from Pathogens

For a complete list of videos, visit our video library