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

Author Question: A train is traveling due south at a constant velocity of 86 mi/h. Any unbalanced force acting on ... (Read 51 times)

tiffannnnyyyyyy

  • Hero Member
  • *****
  • Posts: 512
A train is traveling due south at a constant
  velocity of 86 mi/h. Any unbalanced force
  acting on the train with respect to the Earths
  surface must be
  a)zero.
  b)directed vertically upward.
  c)directed toward the south.
  d)directed vertically downward.

Question 2

A wheel rotates about a fixed axis with a constant angular acceleration of 4.0 rad/s2 . The diameter of the wheel is 40 cm. What is the linear speed of a point on the rim of this wheel at an instant when that point has a total linear acceleration with a magnitude of 1.2 m/s2?
 a. 39 cm/s
  b. 42 cm/s
  c. 45 cm/s
  d. 35 cm/s
  e. 53 cm/s



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

brittrenee

  • Sr. Member
  • ****
  • Posts: 321
Answer to Question 1

a

Answer to Question 2

b





 

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?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

For a complete list of videos, visit our video library