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

Author Question: Using a lever to move a rock reduces the force a person must exert. What does it do to the work the ... (Read 108 times)

Deast7027

  • Hero Member
  • *****
  • Posts: 538
on: Jul 28, 2018
Using a lever to move a rock reduces the force a person must exert. What does it do to the work the person must do?
 a. it reduces the work also c. the work increases
  b. the work stays the same d. none of the above

Question 2

If one were told the object's initial velocity then one could calculate the work done by using the equations for constant acceleration to find the distance traveled. When we say work is done against a force, we mean the force does
 a. none of the work c. negative work
  b. positive work d. zero work


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

emilymalinowski12

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

C


Deast7027

  • Hero Member
  • *****
  • Posts: 538
Reply #2 on: Jul 28, 2018
Thank you!


emilymalinowski12

  • Sr. Member
  • ****
  • Posts: 338
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Photograph of a person with a cataract in the right eye. Photograph of a person with a cataract in the right eye.
Which do you think is most at work in a debate contest, mastery- or performance-goal orientations or ... Which do you think is most at work in a debate contest, mastery- or performance-goal orientations or ...
The physician and medical assistant will often work together to choose appropriate educational ... The physician and medical assistant will often work together to choose appropriate educational ...
Lift sides of waist with deep effleurage strokes from the side. Move to opposite side and reach over ... Lift sides of waist with deep effleurage strokes from the side. Move to opposite side and reach over ...
1) (a) What is Coulomb?s Law? (b) Find the net electrostatic force on the charge labeled ?P? in ... 1) (a) What is Coulomb?s Law? (b) Find the net electrostatic force on the charge labeled ?P? in ...
What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ... What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ...
Video: Replication of DNA and Chromosomes/ How do cells replicate their DNA? (Animation) no Audio

For a complete list of videos, visit our video library