rogers (nr9358) – Kinematics #1 – volle – (301) 1

This print-out should have 21 questions.Multiple-choice questions may continue onthe next column or page – find all choicesbefore answering.

001 (part 1 of 2) 10.0 pointsWhile John is traveling along a straight inter-state highway, he notices that the mile markerreads 256 km. John travels until he reachesthe 144 km marker and then retraces his pathto the 171 km marker.What is John’s resultant displacement from

the 256 km marker?Answer in units of km

002 (part 2 of 2) 10.0 pointsHow far has he traveled?Answer in units of km

003 (part 1 of 4) 10.0 pointsBoth car A and car B leave school at the sametime, traveling in the same direction. Car Atravels at a constant speed of 79 km/h, whilecar B travels at a constant speed of 87 km/h.How far is Car A from school 1.8 h later?Answer in units of km

004 (part 2 of 4) 10.0 pointsHow far is car B from school 1.8 h later?Answer in units of km

005 (part 3 of 4) 10.0 pointsHow long does it take car A to reach a gasstation a distance 174 km from the school?Answer in units of h

006 (part 4 of 4) 10.0 pointsHow long does it take car B to reach the gasstation?Answer in units of h

007 10.0 pointsA glacier moves with a speed of 54 nm/s.How many years would it take for the

glacier to move 0.65 km? Assume there are365 days in a year.Answer in units of y

008 10.0 points

An oceanic depth-sounding vessel surveys theocean bottom with ultrasonic waves thattravel 1530 m/s in seawater.How deep is the water directly below the

vessel if the time delay of the echo to theocean floor and back is 6 s?Answer in units of m

009 (part 1 of 2) 10.0 pointsA cyclist maintains a constant velocity of6.7 m/s headed away from point A. At someinitial time, the cyclist is 249 m from point A.What will be his displacement from his

starting position after 62 s?Answer in units of m

010 (part 2 of 2) 10.0 pointsWhat will be his position from point A afterthat time?Answer in units of m

011 (part 1 of 2) 10.0 pointsThe position versus time for a certain objectmoving along the x-axis is shown. The ob-ject’s initial position is 1 m.

−6

−4

−2

0

2

4

6

8

0 1 2 3 4 5 6 7 8 9

b

b

b b

b

b

time (s)

position(m

)

Find the instantaneous velocity at 6.5 s.Answer in units of m/s

012 (part 2 of 2) 10.0 pointsFind the average velocity over the whole timeshown.Answer in units of m/s

013 (part 1 of 4) 10.0 pointsThe position versus time for a certain object

rogers (nr9358) – Kinematics #1 – volle – (301) 2

moving along the x-axis is shown. The ob-ject’s initial position is −4 m.

−6

−4

−2

0

2

4

6

8

10

0 1 2 3 4 5 6 7 8 9

b

b

b b

b

b

time (s)

position(m

)

Find the instantaneous velocity at 1 s.Answer in units of m/s

014 (part 2 of 4) 10.0 pointsFind the instantaneous velocity at 2.5 s.Answer in units of m/s

015 (part 3 of 4) 10.0 pointsFind the instantaneous velocity at 4 s.Answer in units of m/s

016 (part 4 of 4) 10.0 pointsFind the instantaneous velocity at 8.5 s.Answer in units of m/s

017 (part 1 of 5) 10.0 pointsConsider the displacement curve OABC

0 1 2−2

−1

0

1

2

x(m

)

t (s)

Displacement vs Time

O

A

B

C

What is the average velocity from point Oto A?

1. vOA

= −

√

3 m/s

2. vOA

= +√

3 m/s

3. vOA

= −2 m/s

4. vOA

= 0 m/s

5. vOA

= +2 m/s

018 (part 2 of 5) 10.0 pointsWhat is the average velocity for the motionfrom point O to point B?

1. vOB

= +√

3 m/s

2. vOB

= −

√

3 m/s

3. vOB

= 0 m/s

4. vOB

= +2 m/s

5. vOB

= −2 m/s

019 (part 3 of 5) 10.0 pointsWhat is the average speed for the motion frompoint O to point B?

1. sOB

= −2 m/s

rogers (nr9358) – Kinematics #1 – volle – (301) 3

2. sOB

= +2 m/s

3. sOB

= −

√

3 m/s

4. sOB

= 0 m/s

5. sOB

= +√

3 m/s

020 (part 4 of 5) 10.0 pointsWhat is the instantaneous velocity at pointB?

1. vB= −2 m/s

2. vB= +2 m/s

3. vB= +

√

3 m/s

4. vB= 0 m/s

5. vB= −

√

3 m/s

021 (part 5 of 5) 10.0 pointsWhat is the instantaneous speed at point B?

1. sB= −

√

3 m/s

2. sB= +2 m/s

3. sB= −2 m/s

4. sB= 0

5. sB= +

√

3 m/s