Answered: 1. Which of the following values are…

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter2: Motion

Section: Chapter Questions

Problem IM

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Which of the following values are vectors? (Choose all that apply)

	74o⁢C
	21 kilometers north
	Increase of 19 Kelvin
	11.5 mm
	1 cm in the positive x-direction
	4 meters

2. Edna's basketball coach is having her do an exercise where she starts at the south end of the court, runs 28 meters north to the other end of the court, then turns around and runs back to where she started. When she completes this drill, what is the magnitude of her displacement?

	28 m
	56 m
	0 m
	14 m

3. Vectors are often drawn as rays. What does the length of the ray represent?

	the direction of the vector
	the magnitude of the vector
	length does not mean anything
	the frame of reference

4. John is at the park playing fetch with his cat. He throws the ball 1 m south, and his cat retrieves the ball and returns it to John. John then throws the ball 3 meters, and the cat again collects the ball and returns it to John. When the cat returns for the second time, what distance has the cat traveled?

	6 m
	8 m
	4 m
	2 m

5. Vectors can be added visually. How is this done?

	by arranging the vectors head to tail
	by arranging the vectors head to head
	by arranging the vectors by length
	by arranging the vectors tail to tail

6. When a person is walking in a straight line, they are also spinning as the Earth rotates, as well as revolving around the Sun. How do physicists avoid these complications in motion problems?

	They only concern themselves with speed, not velocity.
	They establish a fixed frame of reference.
	They represent all of these factors as vectors.
	They take all of these factors into account in their calculations.

7. Vectors are often drawn as rays with an arrow at one end. Why does it matter that the arrow is on the correct end of the vector?

	The arrow represents the direction of the vector.
	The arrow can be placed at either end of the ray.
	The arrow is used to define the frame of reference.
	The arrow represents the magnitude of the vector.

8. How can you correctly identify a scalar quantity?

	Scalars have a magnitude and direction.
	Scalars only have a magnitude.
	Scalars are not used in physics.
	Scalars only have a direction.

9. Janine is a police officer patrolling a street. She drives 2.2 km east, then 4.4 km west, then 1.7 km east. If east is the positive direction, which of the following equations are accurate?

	d=0.5 km
	d=−0.5 km
	d=8.3 km
	d→=8.3 km
	d→=0.5 km
	d→=−0.5 km

10. Cory is at the park playing fetch with his dog. He throws the ball 23 m south, and his dog retrieves the ball and returns it to Cory. Cory then throws the ball 18 meters, and the dog again collects the ball and returns it to Cory. When the dog returns for the second time, what distance has the dog traveled?

	82 m
	36 m
	23 m
	0 m

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