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

Author Question: Jerome pitches a baseball of mass 0.15 kg. The ball arrives at home plate with a speed of 40 m/s and ... (Read 126 times)

scienceeasy

  • Hero Member
  • *****
  • Posts: 565
on: Jul 28, 2018
Jerome pitches a baseball of mass 0.15 kg. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to Jerome with a return speed of 60 m/s. What is the magnitude of change in the ball's momentum?
 a. 4.0 kgm/s
  c. 15 kgm/s
  b. 8.0 kgm/s
  d. 20 kgm/s

Question 2

Two identical balls have the same amount of charge, but the charge on ball A is positive and the charge on ball B is negative. The balls are placed on a smooth, level, frictionless table whose top is an insulator. Which of the following is true?
 a. They will move together with constant acceleration.
  b. Since the force on A is equal but opposite to the force on B, they will not move.
  c. Since the force on both balls is negative, they will move in the negative direction.
  d. None of the above is correct.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Tonyam972

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

D


scienceeasy

  • Member
  • Posts: 565
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

at

  • Member
  • Posts: 359
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Blood Agar Plate- gamma hemolysis Blood Agar Plate- gamma hemolysis
The Speed of Light Is Constant The Speed of Light Is Constant
Normal Faults Common at divergent plate boundaries Normal Faults Common at divergent plate boundaries
Aspergillosis fungal ball in the right lung. Aspergillosis fungal ball in the right lung.
Ethanol has the molecular formula C2H6O. Which ball and stick model shown above represents ... Ethanol has the molecular formula C2H6O. Which ball and stick model shown above represents ...
a billiard ball physics question a billiard ball physics question
Video: What is an ecosystem?

For a complete list of videos, visit our video library