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

Author Question: An object of mass 4 kg is thrown vertically upwards from ground level with an initial speed of 20 ... (Read 90 times)

leo leo

  • Hero Member
  • *****
  • Posts: 566
on: Jul 29, 2018
An object of mass 4 kg is thrown vertically upwards from ground level with an initial speed of 20 m/s. Ignore friction and use g = 10 m/s2. What is the kinetic energy of the object just before it hits the ground?
 
  A) 800 J
  B) 400 J
  C) 0 J
  D) 100 J
  E) 200 J

Question 2

An object is moving with constant non-zero velocity in the +x-axis. The position versus time graph of this object is
 
  A) a horizontal straight line.
  B) a vertical straight line.
  C) a straight line making an angle with the time axis.
  D) a parabolic curve.
  E) a hyperbolic curve.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

djpooyouma

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

C


leo leo

  • Member
  • Posts: 566
Reply 2 on: Jul 29, 2018
Gracias!

ryansturges

  • Member
  • Posts: 338
Reply 3 on: Yesterday
Excellent

« previous next »
 

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?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Three routes of tissue-level transport in plants: transmembrane, symplastic, and apoplastic. Three routes of tissue-level transport in plants: transmembrane, symplastic, and apoplastic.
Visual Object Agnosia Without Prosopagnosia Visual Object Agnosia Without Prosopagnosia
The greatest bone mass is found around age 30 for both men and women, with the later decline being f The greatest bone mass is found around age 30 for both men and women, with the later decline being f
A typical low-side driver (LSD) which uses a control module to control the ground side of the relay ... A typical low-side driver (LSD) which uses a control module to control the ground side of the relay ...
People using walkers typically have a high level of mobility impairment. People using walkers typically have a high level of mobility impairment.
The Global Positioning System determines the location of an object from its distances to ... The Global Positioning System determines the location of an object from its distances to ...
Video: Transferring genes into plants Animation

For a complete list of videos, visit our video library