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 117 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?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

A comparison between chromosomes found in a normal human cell and a cancer cell from the same person A comparison between chromosomes found in a normal human cell and a cancer cell from the same person
Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu
An emergency department physician at work An emergency department physician at work
Remove all jewelry before performing service work on any vehicle. Remove all jewelry before performing service work on any vehicle.
Without losing contact, move to the recipient’s right side. Stand at the hip and face the head. ... Without losing contact, move to the recipient’s right side. Stand at the hip and face the head. ...
Similar Rock Outcrops on Mars and Earth Similar Rock Outcrops on Mars and Earth
Video: Red alga life cycle Animation

For a complete list of videos, visit our video library