Transcript Clicker presenation for Knight

Classroom Response System
“Clicker” Questions for
Physics for Scientists and Engineers
by Randall D. Knight
Solutions as numbers (EduCue)
PowerPoints prepared by
Benjamin Grinstein, University of California San Diego
Chapter 1
Which car is going faster, 1 or 2? Assume there are equal
intervals of time between the frames of both movies.
Car 1
Car 2
Which car is going faster, 1 or 2? Assume there are equal
intervals of time between the frames of both movies.
Car 1
Car 2
2 is going faster
Three motion diagrams are shown. Which is a dust particle
settling to the floor at constant speed, which is a ball
dropped from the roof of a building, and which is a
descending rocket slowing to make a soft landing on Mars?
1. (a) is dust, (b) is ball, (c) is rocket
2. (a) is ball, (b) is dust, (c) is rocket
3. (a) is rocket, (b) is dust, (c) is ball
4. (a) is rocket, (b) is ball, (c) is dust
5. (a) is ball, (b) is rocket, (c) is dust
Three motion diagrams are shown. Which is a dust particle
settling to the floor at constant speed, which is a ball
dropped from the roof of a building, and which is a
descending rocket slowing to make a soft landing on Mars?
1. (a) is dust, (b) is ball, (c) is rocket
2. (a) is ball, (b) is dust, (c) is rocket
3. (a) is rocket, (b) is dust, (c) is ball
4. (a) is rocket, (b) is ball, (c) is dust
5. (a) is ball, (b) is rocket, (c) is dust
A particle moves from position 1 to position 2
during the interval ∆t. Which vector shows the
particle’s average velocity?
(1)
(2)
(3)
(4)
(5)
A particle moves from position 1 to position 2
during the interval ∆t. Which vector shows the
particle’s average velocity?
(1)
(2)
(3)
(4)
(5)
A particle undergoes acceleration while moving from
point 1 to point 2. Which of the choices shows the velocity
vector as the object moves away from point 2?
(1)
(2)
(3)
(4)
A particle undergoes acceleration while moving from
point 1 to point 2. Which of the choices shows the velocity
vector as the object moves away from point 2?
(1)
(2)
(3)
(4)
Rank in order, from the most to the least, the number of
significant figures in the following numbers. For example,
if b has more than c, c has the same number as a, and a has
more than d, you could give your answer as b > c = a > d.
a. 8200
b. 0.0052
1.
2.
3.
4.
5.
d>c>b=a
a=b=d>c
b=d>c>a
d>c>a>b
b>a=c=d
c. 0.430
d. 4.321 10-10
Rank in order, from the most to the least, the number of
significant figures in the following numbers. For example,
if b has more than c, c has the same number as a, and a has
more than d, you could give your answer as b > c = a > d.
a. 8200
b. 0.0052
1.
2.
3.
4.
5.
d>c>b=a
a=b=d>c
b=d>c>a
d>c>a>b
b>a=c=d
c. 0.430
d. 4.321 10-10
Chapter 1
Reading Quiz
What is a “particle”?
1. Any part of an atom
2. An object that can be represented as a mass at a single
point in space
3. A part of a whole
4. An object that can be represented as a single point in
time
5. An object that has no top or bottom, no front or back
What is a “particle”?
1. Any part of an atom
2. An object that can be represented as a mass at a
single point in space
3. A part of a whole
4. An object that can be represented as a single point in
time
5. An object that has no top or bottom, no front or back
What quantities are shown on a complete motion
diagram?
1. The position of the object in each frame of the film,
shown as a dot
2. The average velocity vectors (found by connecting
each dot in the motion diagram to the next with a
vector arrow)
3. The average acceleration vectors (there is one
acceleration vector linking each two velocity vectors)
4. All of the above
What quantities are shown on a complete motion
diagram?
1. The position of the object in each frame of the film,
shown as a dot
2. The average velocity vectors (found by connecting
each dot in the motion diagram to the next with a
vector arrow)
3. The average acceleration vectors (there is one
acceleration vector linking each two velocity vectors)
4. All of the above
An acceleration vector
1. tells you how fast an object is going.
2. is constructed from two velocity vectors.
3. is the second derivative of the position.
4. is parallel or opposite to the direction of motion.
5. Acceleration vectors weren’t discussed in this chapter.
An acceleration vector
1. tells you how fast an object is going.
2. is constructed from two velocity vectors.
3. is the second derivative of the position.
4. is parallel or opposite to the direction of motion.
5. Acceleration vectors weren’t discussed in this chapter.
The pictorial representation of a physics problem
consists of
1. a sketch.
2. a coordinate system.
3. symbols.
4. a table of values.
5. all of the above.
The pictorial representation of a physics problem
consists of
1. a sketch.
2. a coordinate system.
3. symbols.
4. a table of values.
5. all of the above.