Quiz Kinematics

Multiple Choice
Identify the choice that best completes the statement or answers the question.

____	1.	The approximate number of days in one year is 365.25. The number of seconds in one year is:
a.	21,915.	
b.	1,314,900.	
c.	31,558,000.	
d.	3,155,800,000.	

____	2.	Using scientific notation, the number 0.00000125 is written as:
a.	1/800,000	
b.	1.25 ´ 10-6	
c.	1.25 ´ 106	
d.	8.00 ´ 105	

____	3.	Using scientific notation, the ratio  is written as:
a.	0.0025	
b.	25 ´ 104	
c.	2.5 ´ 10-3	
d.	4.00 ´ 102	

____	4.	To elude a pack of wolves, an elk runs 15 kilometers in 0.75 hours. What is the speed of the elk? 
a.	5 km/hr	
b.	10 km/hr	
c.	12 km/hr	
d.	20 km/hr	

____	5.	A golfer walks at an average rate of 7.20 feet per second on the golf course. How much time is required for her to walk from the tee to the green if the distance is 612 feet?
a.	0.0118 minutes	
b.	4406 seconds	
c.	0.85 minutes	
d.	85 seconds	

____	6.	The expression “per” as in miles per hour or meters per second mathematically indicates:
a.	addition.	
b.	subtraction.	
c.	multiplication.	
d.	division.	

____	7.	Distance may be expressed as a:
a.	ratio of time to speed.	
b.	ratio of speed to time.	
c.	product of time and speed.	
d.	quotient of time and speed.	

____	8.	How far will a Canada goose travel if it flies at an average speed of 66 miles per hour for 20 minutes?
a.	132 miles	
b.	22 miles	
c.	13.2 miles	
d.	3.3 miles	

____	9.	On this graph, the dependent variable is:

a.	distance.	
b.	speed.	
c.	acceleration.	
d.	the slope of the speed vs. distance graph.	

____	10.	The term that refers to the location of an object is:
a.	distance.	
b.	displacement.	
c.	position.	
d.	All of the above	

____	11.	The term that describes the amount of change in a certain direction in the location of an object is:
a.	distance.	
b.	displacement.	
c.	position.	
d.	None of the above	

____	12.	The total length of a journey from start to finish with no regard to direction is called:
a.	distance.	
b.	displacement.	
c.	position.	
d.	velocity.	

____	13.	The slope of a distance versus time graph represents:
a.	position.	
b.	displacement.	
c.	speed.	
d.	acceleration.	

Each of the four graphs pictured in the diagram below represents the motion of four different objects.

Figure 3-1

____	14.	Which graph in Figure 3-1 represents an object whose speed is zero?
a.	1	
b.	2	
c.	3	
d.	4	

____	15.	Which graph in Figure 3-1 represents an object with non-zero uniform speed?
a.	1	
b.	2	
c.	3	
d.	4	

____	16.	Which graph in Figure 3-1 represents an object whose speed is increasing?
a.	1	
b.	2	
c.	3	
d.	4	

____	17.	Which graph in Figure 3-1 represents an object whose speed is decreasing to zero?
a.	1	
b.	2	
c.	3	
d.	4	

____	18.	The graph below represents the motion of a cart along a straight line. During which time intervals is the cart moving with non-zero uniform speed?

a.	AB and BC	
b.	AB and CD	
c.	BC and CD	
d.	BC and DE	

Each of the four displacement vs. time graphs pictured in the diagram below represents the motion of four different objects.

Figure 3-2

____	19.	Which graph in Figure 3-2 represents a typical inverse relationship?
a.	1	
b.	2	
c.	3	
d.	4	

____	20.	A ball is thrown vertically upward from the surface of the Earth. The ball returns to Earth. Which graph in Figure 3-2 represents the displacement of the ball according to this description? 
a.	1	
b.	2	
c.	3	
d.	4	

____	21.	Many cars are made with an automatic feature called cruise control. When the driver sets a car on cruise control, a computer adjusts the engine to maintain the car’s speed constant. When a car is on cruise control on a straight road, the acceleration of the car is best described as:
a.	equal to the initial speed when the cruise control was set.	
b.	equal to zero.	
c.	greater than it was before the cruise control was set.	
d.	less than it was before the cruise control was set.	

____	22.	A car goes from 30 miles per hour (mph) to 60 mph in six seconds. The acceleration of the car is:
a.	5 mph per second.	
b.	6 mph per second.	
c.	30 mph per second.	
d.	180 mph per second.	

The graph below represents the speed of a car vs. time.

Figure 4-1

____	23.	
Which point on the speed versus time graph in Figure 4-1 has the highest acceleration?
a.	A	
b.	B	
c.	C	
d.	D	

____	24.	Which of the following statements about the graph in Figure 4-1 is FALSE?
a.	The speed of the car at point D is twice the speed of the car at point A.	
b.	The speed of the car is increasing at point B.	
c.	The speed of the car is constant at point D.	
d.	The speed of the car is increasing at point C.	

____	25.	A rocket has an acceleration of 50 m/sec2. How long does it take the rocket to reach a speed of 1,000 m/sec?
a.	.05 seconds	
b.	20 seconds	
c.	50 seconds	
d.	50,000 seconds	

The graph below represents the motion of an object.

Figure 4-2

____	26.	Between two and three seconds, the speed of the object shown in Figure 4-2:
a.	is approximately 1.33 m/sec.	
b.	is approximately 3 m/sec.	
c.	increases from 1 m/sec to 4 m/sec.	
d.	increases from rest to 4 m/sec.	

____	27.	The acceleration of the object in Figure 4-2 is:
a.	1 m/sec2 between 0 and 2 seconds.	
b.	4 m/sec2 between 2 and 3 seconds.	
c.	-1 m/sec2 between 6 and 8 seconds.	
d.	4 m/sec2 between 3 and 6 seconds.	

____	28.	According to Figure 4-2, in the first 5 seconds the object moves a distance of approximately:
a.	5.0 meters.	
b.	10.0 meters.	
c.	12.5 meters.	
d.	20.0 meters.	

____	29.	The equation  relates which three variables?
a.	Distance, speed, and time	
b.	Distance, acceleration, and time	
c.	Speed, acceleration, and time	
d.	Speed, acceleration, and distance	

____	30.	The term at in the equation  represents:
a.	the amount the object’s position has changed.	
b.	the amount the object’s speed has changed.	
c.	the amount the object’s acceleration has changed.	
d.	the amount the object’s time in motion has changed.	

Quiz Kinematics
Answer Section

MULTIPLE CHOICE

	1.	ANS:	C	PTS:	1	DIF:	intermediate	REF:	section 2.2

	2.	ANS:	B	PTS:	1	DIF:	intermediate	REF:	section 2.3

	3.	ANS:	C	PTS:	1	DIF:	intermediate	REF:	section 2.3

	4.	ANS:	D	PTS:	1	DIF:	basic	REF:	section 3.1

	5.	ANS:	D	PTS:	1	DIF:	basic	REF:	section 3.1

	6.	ANS:	D	PTS:	1	DIF:	basic	REF:	section 3.1

	7.	ANS:	C	PTS:	1	DIF:	basic	REF:	section 3.1

	8.	ANS:	B	PTS:	1	DIF:	intermediate	REF:	section 3.1

	9.	ANS:	B	PTS:	1	DIF:	basic	REF:	section 3.2

	10.	ANS:	C	PTS:	1	DIF:	basic	REF:	section 3.3

	11.	ANS:	B	PTS:	1	DIF:	basic	REF:	section 3.3

	12.	ANS:	A	PTS:	1	DIF:	basic	REF:	section 3.3

	13.	ANS:	C	PTS:	1	DIF:	basic	REF:	section 3.3

	14.	ANS:	D	PTS:	1	DIF:	intermediate	REF:	section 3.3

	15.	ANS:	A	PTS:	1	DIF:	intermediate	REF:	section 3.3

	16.	ANS:	B	PTS:	1	DIF:	intermediate	REF:	section 3.3

	17.	ANS:	C	PTS:	1	DIF:	intermediate	REF:	section 3.3

	18.	ANS:	D	PTS:	1	DIF:	intermediate	REF:	section 3.3

	19.	ANS:	D	PTS:	1	DIF:	intermediate	REF:	section 3.3

	20.	ANS:	B	PTS:	1	DIF:	advanced	REF:	section 3.3

	21.	ANS:	B	PTS:	1	DIF:	basic	REF:	section 4.1

	22.	ANS:	A	PTS:	1	DIF:	basic	REF:	section 4.1

	23.	ANS:	B	PTS:	1	DIF:	basic	REF:	section 4.1

	24.	ANS:	D	PTS:	1	DIF:	intermediate	REF:	section 4.1

	25.	ANS:	B	PTS:	1	DIF:	intermediate	REF:	section 4.1

	26.	ANS:	C	PTS:	1	DIF:	intermediate	REF:	section 4.1

	27.	ANS:	C	PTS:	1	DIF:	advanced	REF:	section 4.1

	28.	ANS:	C	PTS:	1	DIF:	advanced	REF:	section 4.1

	29.	ANS:	C	PTS:	1	DIF:	basic	REF:	section 4.2

	30.	ANS:	B	PTS:	1	DIF:	intermediate	REF:	section 4.2