« previous next »

Author Question: Two identical arrows, one with twice the kinetic energy of the other, are fired into a bale of hay. ... (Read 46 times)

darbym82

  • Hero Member
  • *****
  • Posts: 570
on: Jul 29, 2018
Two identical arrows, one with twice the kinetic energy of the other, are fired into a bale of hay. Compared with penetration of the slow arrow, the faster arrow penetrates
 
  A) the same distance.
  B) twice as far.
  C) four times as far.
  D) more than four times as far.
  E) none of the above

Question 2

About 40 J is required to push a crate 4 m across a floor. If the push is in the same direction as the motion of the crate, the force on the crate is about
 
  A) 4 N.
  B) 10 N.
  C) 40 N.
  D) 160 N.


kbennett34

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

The FDA recognizes 118 routes of administration.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Acromegaly in one individual from a pair of identical twins. Acromegaly in one individual from a pair of identical twins.
Energy flows in a typical gasoline-powered car Energy flows in a typical gasoline-powered car
The coupling of reactions in energy transfer. The coupling of reactions in energy transfer.
Energy Transfer Processes: Free Convection Energy Transfer Processes: Free Convection
Ancient drawing of energy channels and acupoints. Ancient drawing of energy channels and acupoints.
Potential energy Potential energy
Video: Four Giant Convection Cells oF Earth

For a complete list of videos, visit our video library