Completion
True/False
Which one is it?
Multiple Choice
How many choices?
100
Acceleration is the rate of change in _________________.
Velocity
100
True or False: A straight diagonal line on a DISTANCE-VERSUS-TIME graph indicates constant speed.
True
100
In speed-versus-time graph, a straight line shows that acceleration is _____ A. Changing B. Constant C. Increasing D. Decreasing
B. Constant
100
Average speed is A. Equivalent to velocity B. The total distance traveled divided by the total time. C. The rate at which slope changes. D. The rate at which an object is moving at a given instant.
B. The total distance traveled divided by the total time.
100
If you know a car traveled 300 km in 3 hrs. you can find its A. Average speed B. Velocity C. Direction D. Acceleration
A. Average speed
200
The statement that the motion of a hurricane is 20 kilometers per hour in an easterly direction is a description of the hurricanes _______________.
Velocity
200
True or False: An SI unit of VELOCITY is the meter per second per second.
Acceleration
200
To determine the acceleration of an object moving in a straight line, you must calculate the change in its speed during each unit of ______ A. Deceleration. B. Motion C. Time D. Veloctiy
C. Time
200
A place or object used for comparison to determine if something is in motion is called A. A position B. A reference point C. A Constant D. Velocity
B. A reference point
200
Which of these is an example of deceleration? A. A bird taking off for flight B. A roller coaster moving down a steep hill C. A car approaching a red light D. An airplane following a straight flight path
C. A car approaching a red light
300
A change in an objects position relative to a reference point is called _____________.
Motion.
300
True or False: AVERAGE SPEED is the rate at which an object is moving at a given instant.
False, Instantaneous Speed.
300
If an object moved in the same direction & at a constant speed for 4 hours, which of the following is true? A. The object's speed changed during the 4 hours. B. The object's velocity did not change. C. The object accelerated during the 4 hours. D. The object decelerated during the 4 hours.
B. The object's velocity did not change.
300
As Earth orbits the sun, it is moving about A. 30 km/h B. 30 km/s C. 300 km/s D. 3 km/m
B. 30 km/s
300
An object changing direction is an example of A. Acceleration B. Speed Speed equals distance divided by A. Time B. Distance C. Speed D. Velocity
A. Acceleration A. Time
400
If 2 lines appear on the same motion graph, the line with the steeper _______________ indicates a greater speed.
Slope.
400
True or False: Motion is measured relative to a REFERENCE POINT.
True
400
If a bicyclist travels 30 kilometers in 2 hours, her average speed is ____? A. 2 km/h B. 15 km/h C. 60 km.h D. 30 km/h
B. 15 km/h
400
The basic SI unit of length is the A. Mile B. Inch C. Foot D. Meter The International System of Units is used by scientists A. only in the U.S. B. only in France C. in most of Europe D. all over the world
D. Meter D. all over the world
400
On a graph showing distance versus time, a horizontal line represents an object that is A. moving at a constant speed B. not moving at all The steepness of a line on a graph is called the A. vertical axis B. Slope C. Rise D. Run
B. not moving at all B. Slope
500
If a car is speeding up, its initial speed is _______ than its final speed.
less.
500
True or False: If a toy car traveling at 10 cm/s passes a toy car moving at 10 cm/s in the opposite direction, both cars have the same VELOCITY.
False, Speed.
500
Suppose you are sitting in a car at a red light when a moving car toward the north begins to pass you. If you use the passing car as a reference point, the direction in which you appear to be moving is toward the __________.
South.
500
When an object's position relative to another object is changing A. It is accelerating B. It is in motion C. It is speeding D. It has a high velocity Which of the following is the SI unit of acceleration? A. m/s B. m/s^2 C. m^2/s D. s^2/m
B. It is in motion B. m/s^2
500
The rate at which velocity changes is called A. instantaneous speed B. direction C. acceleration D. motion When you know both the speed & direction of an object's motion, you know the A. Average speed of the object B. Instantaneous speed of the object C. Distance of the object has traveled D. Velocity of the object.
C. acceleration D. Velocity of the object.
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