« previous next »

Author Question: A 20.0-g bullet moving at 1 000 m/s is fired through a one-kg block of wood emerging at a speed of ... (Read 92 times)

mckennatimberlake

  • Hero Member
  • *****
  • Posts: 559
on: Jul 28, 2018
A 20.0-g bullet moving at 1 000 m/s is fired through a one-kg block of wood emerging at a speed of 100 m/s. If the block had been originally at rest and is free to move, what is its resulting speed?
 a. 22.0 m/s
  b. 18.0 m/s
  c. 20.0 m/s
  d. 2.00 m/s
  e. 45.0 m/s

Question 2

Two particles collide, one of them initially being at rest. Is it possible for both particles to be at rest after the collision?
 a. If the collision is perfectly inelastic, then this happens.
  b. If the collision is elastic, then this happens.
  c. This can happen sometimes if the more massive particle was at rest.
  d. No.


leeeep

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

mckennatimberlake

  • Hero Member
  • *****
  • Posts: 559
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


leeeep

  • Sr. Member
  • ****
  • Posts: 315
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

giant wood spider giant wood spider
Wood Betony Wood Betony
Marijuana Use and Binge Drinking in Emerging Adulthood Rates of most kinds of substance use peak in Marijuana Use and Binge Drinking in Emerging Adulthood Rates of most kinds of substance use peak in
Thomas Waterman Wood, a northerner, painted this hopeful interpretation of Reconstruction, His First Thomas Waterman Wood, a northerner, painted this hopeful interpretation of Reconstruction, His First
Find the speed after 40.0 min if the initial speed is 3250 rev/min Find the speed after 40.0 min if the initial speed is 3250 rev/min
Aspirin and most other NSAIDs block prostaglandins. Aspirin and most other NSAIDs block prostaglandins.
Video: Apicomplexan life cycle Animation

For a complete list of videos, visit our video library