This topic contains a solution. Click here to go to the answer

Author Question: A 0.140-kg baseball is thrown with a velocity of 27.1 m/s It is struck by the bat with an average ... (Read 38 times)

cmoore54

  • Hero Member
  • *****
  • Posts: 568
A 0.140-kg baseball is thrown with a velocity of 27.1 m/s It is struck by the bat with an average force of 5000 N, which results in a velocity of 37.0 m/s in the opposite direction from the original velocity.
 
  How long were the bat and ball in contact?
  A) 4.30  10-3 s B) 3.07  10-2 s C) 1.79  10-3 s D) 1.28  10-2 s

Question 2

A popular swinging-balls apparatus (Newton's cradle) consists of a series of identical elastic balls suspended by strings so they barely touch each other.
 
  When two balls are pulled away from one end and released, they strike the row of balls and two balls pop out from the other end. If instead, one ball popped out with twice the speed, this would violate the conservation of
  A) momentum.
  B) energy.
  C) both of these
  D) none of the above



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

tuwy

  • Sr. Member
  • ****
  • Posts: 336
Answer to Question 1

C

Answer to Question 2

Answer: B




cmoore54

  • Member
  • Posts: 568
Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it


debra928

  • Member
  • Posts: 342
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

For a complete list of videos, visit our video library