« previous next »

Author Question: A car travels counterclockwise around a flat circle of radius 0.25 km at a constant speed of 20 m/s. ... (Read 416 times)

wenmo

  • Hero Member
  • *****
  • Posts: 540
on: Jul 28, 2018

A car travels counterclockwise around a flat circle of radius 0.25 km at a constant speed of 20 m/s. When the car is at point A as shown in the figure, what is the car's acceleration?
 
   


   
  a.
  1.6 m/s2, south
   
  b.
  Zero
   
  c.
  1.6 m/s2, east
   
  d.
  1.6 m/s2, north
   
  e.
  1.6 m/s2, west

Question 2

The small circles in the diagram below represent the positions along the x axis of a body at equal time intervals. Assume the body moves in a straight line.
 
   
 
   This diagram is most likely to describe


   
  a.
  a swimmer swimming laps.
   
  b.
  an exercise on a rowing machine.
   
  c.
  a person on a treadmill.
   
  d.
  a tennis ball during a volley.
   
  e.
  a runner who tripped, fell, rose, and continued racing.


sierramartinez

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 28, 2018
Answer to Question 1

e

Answer to Question 2

e


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

For this bimolecular reaction, the rate constant k is second order For this bimolecular reaction, the rate constant k is second order
How to evaluate a function containing the constant k How to evaluate a function containing the constant k
Use flat fingers to apply L stroke in several locations to cover the entire forehead, from midline ... Use flat fingers to apply L stroke in several locations to cover the entire forehead, from midline ...
Speed of Convergence to the Steady State Speed of Convergence to the Steady State
A pool player is attempting a fancy shot. He hits the cue ball giving it a speed of 5.57 m/s ... A pool player is attempting a fancy shot. He hits the cue ball giving it a speed of 5.57 m/s ...
If you walk 5.0 m horizontally forward at a constant velocity carrying a 10 N object, the ... If you walk 5.0 m horizontally forward at a constant velocity carrying a 10 N object, the ...
Video: Nucleic acid digestion -small intestine

For a complete list of videos, visit our video library