« previous next »

Author Question: Ann the Astronaut weighs 65.0 kg. She is space walking outside the space shuttle and pushes a ... (Read 192 times)

newyorker26

  • Hero Member
  • *****
  • Posts: 536
on: Jul 28, 2018
Ann the Astronaut weighs 65.0 kg. She is space walking outside the space shuttle and pushes a 350.0-kg satellite away from the shuttle at 0.70 m/s. What speed does this give Ann as she moves toward the shuttle?
 a. 0.13 m/s
  b. 3.8 m/s
  c. 590 m/s
  d. 290 m/s
  e. 7.7 m/s

Question 2

A machine gun is attached to a railroad flatcar that rolls with negligible friction. If the railroad car has a mass of 6.35  104 kg, how many bullets of mass 35.0 g would have to be fired at 200 m/s off the back to give the railroad car a forward velocity of 0.56 m/s?
 a. 5.1E4
  b. 2.0E+3
  c. 6.5E+5
  d. 5.1E+3
  e. 6.5E+4


zacnyjessica

  • Sr. Member
  • ****
  • Posts: 345
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
« previous next »
 

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Walking and running in a tetrapod. Walking and running in a tetrapod.
Living in Space Living in Space
Couples walking Couples walking
Joseph Moore and His Family (1839), by Erastus Salisbury Field, reflects the emerging middle-class f Joseph Moore and His Family (1839), by Erastus Salisbury Field, reflects the emerging middle-class f
International space station International space station
Berger and colleagues (2010) explored how newly-walking toddlers crossed different bridges. Berger and colleagues (2010) explored how newly-walking toddlers crossed different bridges.
Video: Stomach peristalsis - Movement of Food Through the Small Intestine

For a complete list of videos, visit our video library