« 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 59 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?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

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?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Stratigraphic section of the Fayum shows the relative age of early anthropoid fossils. Stratigraphic section of the Fayum shows the relative age of early anthropoid fossils.
One way to think about the different phases or stages of adulthood is in terms of the relative ... One way to think about the different phases or stages of adulthood is in terms of the relative ...
Sociologists disagree about the relative significance of race and social class in determining social ... Sociologists disagree about the relative significance of race and social class in determining social ...
IPCC Temperature Increase Predictions Relative to 1986-2005 IPCC Temperature Increase Predictions Relative to 1986-2005
Mobilize neck in wavelike motion. Return the head to a neutral position facing upward. Apply ... Mobilize neck in wavelike motion. Return the head to a neutral position facing upward. Apply ...
Relative Sizes of Dwarf Planets and Earth Relative Sizes of Dwarf Planets and Earth
Video: Frequency of stimulation and force (Recruitment of motor units and force)

For a complete list of videos, visit our video library