« previous next »

Author Question: In 20 minutes, Kara ran 2.40 km on a treadmill facing due east. Relative to the gym, what were her ... (Read 58 times)

neverstopbelieb

  • Hero Member
  • *****
  • Posts: 534
on: Jul 28, 2018
In 20 minutes, Kara ran 2.40 km on a treadmill facing due east. Relative to the gym, what were her displacement and average velocity during this time interval?
 a. 0; 0
  b. 0; 2.00 m/s
  c. 2.40 km, east; 0
  d. 2.40 km, east; 2.00 m/s, east
  e. 2.40 km, west; 2.00 m/s, west

Question 2

A car travels north at 30 m/s for one half hour. It then travels south at 40 m/s for 15 minutes. The total distance the car has traveled and its displacement are:
 a. 18 km; 18 km S.
  b. 36 km; 36 km S.
  c. 36 km; 36 km N.
  d. 90 km; 18 km N.
  e. 90 km; 36 km N.


ndhahbi

  • Sr. Member
  • ****
  • Posts: 390
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

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.

Relative sizes of the sporophyte and gametophyte generations of bryophytes, ferns, and seed plants. Relative sizes of the sporophyte and gametophyte generations of bryophytes, ferns, and seed plants.
The anatomical position: standing erect, gazing straight ahead, arms down at sides, palms facing for The anatomical position: standing erect, gazing straight ahead, arms down at sides, palms facing for
Indicators of Relative Economic Well-Being Indicators of Relative Economic Well-Being
Influences on Temperature: South-facing slopes are typically more vegetated than north-facing ... Influences on Temperature: South-facing slopes are typically more vegetated than north-facing ...
Relative Sizes of Dwarf Planets and Earth Relative Sizes of Dwarf Planets and Earth
A horizontal, 2.00 m long, 3.00 kg uniform beam that lies along the east-west di A horizontal, 2.00 m long, 3.00 kg uniform beam that lies along the east-west di
Video: Introduction to Sleep Apnea

For a complete list of videos, visit our video library