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 c. 0.430 d. 4.321 10-10

1. d > c > b = a2. a = b = d > c3. b = d > c > a4. d > c > a > b5. b > a = c = d

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 c. 0.430 d. 4.321 10-10

1. d > c > b = a2. a = b = d > c3. b = d > c > a4. d > c > a > b5. b > a = c = d

Chapter 1Reading Quiz

What is a “particle”?

1. Any part of an atom2. An object that can be represented as a mass at a single

point in space3. A part of a whole4. An object that can be represented as a single point in

time5. An object that has no top or bottom, no front or back

What is a “particle”?

1. Any part of an atom2. An object that can be represented as a mass at a

single point in space3. A part of a whole4. An object that can be represented as a single point in

time5. 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.