1D Motion Review - Assessment

1.

Multiple Choice

30 sec

1 pt

The closeness of a measurement to its true value is a measure of its:

precision

accuracy

reproducibility

usefulness

2.

Multiple Choice

30 sec

1 pt

Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of exactly 7.32 g for the mass of the standard. These results imply that the balance that was used is:

accurate but not precise

precise but not accurate

both accurate and precise

neither accurate nor precise

3.

Multiple Choice

30 sec

1 pt

A scalar is a quantity that is fully described by ____

magnitude alone

both its magnitude and its direction

both its displacement and its velocity

both its distance and its speed

4.

Multiple Choice

30 sec

1 pt

For any given motion, the distance is ____.

the direction which an object moves

the scalar of the object's velocity

how far out of place which the object finishes relative to the starting location.

the amount of ground which is covered by the moving object.

5.

Multiple Choice

30 sec

1 pt

A vector is a quantity that is fully described by ____.

both its magnitude and its direction

magnitude alone

both its distance and its speed

both its displacement and its velocity

6.

Multiple Choice

30 sec

1 pt

For any given motion, displacement is ____.

the direction which an object moves.

the magnitude which the object moves.

how far out of place which the object finishes relative to the starting location.

the amount of ground which is covered by the moving object.

7.

Multiple Choice

1 min

1 pt

A teacher does the following motion in 10 seconds: (i) walks 2 m, south (ii) walks 4 m, east (iii) walks 2 m, north (iv) walks 4 m, west. The average speed of the teacher is ____.

0.0 m/s

0.83 m/s

1.2 m/s

An average speed cannot be determined since individual speed values are not given.

8.

Multiple Choice

45 sec

1 pt

The motions of five objects - A, B, C, D, and E - are represented by lines on a position-time graph. Write the letter for the object that has the greatest constant velocity.

B

C

D

E

9.

Multiple Choice

1 min

1 pt

A teacher does the following motion in 10 seconds: (i) walks 4 m, south (ii) walks 8 m, east (iii) walks 4 m, north (iv) walks 8 m, west. The average velocity of the teacher is ____.

0.0 m/s

0.6 m/s

1.2 m/s

2.4 m/s

10.

Multiple Choice

1 min

1 pt

An old car has a leaky engine and leaves the following oil drop trace on the street; the drops hit the street at regular time intervals. The oil drop pattern depicts

a constant velocity

an accelerated motion

... it's impossible to tell without any distance-time data.

11.

Multiple Choice

30 sec

1 pt

The slope of a position-time graph represents the _____ of the object.

displacement

acceleration

velocity

none of these

12.

Multiple Choice

30 sec

1 pt

The position-time graph for an object with a positive velocity would be a line with ____

no slope

positive slope

changing slope

a curve

13.

Multiple Choice

30 sec

1 pt

The position-time graph for an object with a velocity of zero would be a line with ____.

zero slope

upwared slope

constant positive slope

changing slope

14.

Multiple Choice

45 sec

1 pt

As represented by this position-time graph, this object is ____.

speeding up, changing directions, and then slowing down

accelerating, first with a positive and then with a negative acceleration

speeding up and then slowing down, all while moving in the same direction

moving in the positive direction and then in the negative direction, both at constant speed

15.

Multiple Choice

45 sec

1 pt

Acceleration is defined as ____.

the rate at which the position changes

the rate at which the displacement changes

the rate at which the speed changes

the rate at which the velocity changes

16.

Multiple Choice

45 sec

1 pt

Which of the following represent an accelerated motion?

An object that remains at rest.

An object moving in a circle at constant speed.

An object moving at constant speed in the same direction.

An object that changes its velocity

17.

Multiple Choice

30 sec

1 pt

A car with a rightward velocity and a leftward acceleration is ____.

moving to the right and speeding up

moving to the right and slowing down

moving to the left and speeding up

moving to the left and slowing down

18.

Multiple Choice

30 sec

1 pt

The slope of a velocity-time graph represents the _____ of the object

displacement

velocity

acceleration

19.

Multiple Choice

30 sec

1 pt

The velocity-time graph for an object with a constant positive acceleration would be a line ____.

that curves upward

that curves, either upward or downward

with no slope

that has changing slope

20.

Multiple Choice

30 sec

1 pt

The motion of an object is depicted by a velocity-time graph. Various time intervals during the motion are depicted by a letter. During which time interval(s) is the object moving with a positive acceleration?

A

C

D

E

21.

Multiple Choice

45 sec

1 pt

As represented by this velocity-time graph, this object is ____.

at rest for several seconds and then accelerates in the negative direction

moving at a constant speed and then slowing down

at rest for several seconds and then moves in the negative direction

... nonsense! None of these appropriately describe the object's motion

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