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

Author Question: The mass of the Moon is 7.4 1022 kg, its radius is 1.74 103 km, and it has no atmosphere. What is ... (Read 80 times)

sdfghj

  • Hero Member
  • *****
  • Posts: 552
The mass of the Moon is 7.4  1022 kg, its radius is 1.74  103 km, and it has no atmosphere. What is the acceleration due to gravity at the surface of the Moon? (G = 6.67  10-11 N  m2/kg2)
 
  A) 2.8  106 m/s2
  B) 9.8 m/s2
  C) 4.9 m/s2
  D) 1.6 m/s2
  E) 0.80 m/s2

Question 2

A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is doubled. If the actual contact with the bat lasts 0.45 s,
 
  what is the ratio of the magnitude of the average acceleration of the ball to its original speed?
  A) 6.7 s-1
  B) 4.4 s-1
  C) 2.2 s-1
  D) 0.15 s-1



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ecabral0

  • Sr. Member
  • ****
  • Posts: 310
Answer to Question 1

D

Answer to Question 2

A




sdfghj

  • Member
  • Posts: 552
Reply 2 on: Jul 29, 2018
:D TYSM


flexer1n1

  • Member
  • Posts: 373
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

For a complete list of videos, visit our video library