Dr. Roz CP Physics Vocab and Concepts Ch. (1-6)
22 m/s
Express 50 mi/h in units of meters per second. (1 mi = 1609 m)
13,500,000,000 m
Express the number 13.5 gigameters in meters without using scientific notation.
In a chosen coordinate system, the time interval of an object in motion can have a negative value. In a chosen coordinate system, the time interval of an object in motion can have a negative value.
False
Joe and Sadie are supposed to meet at 3 pm in Springfield, which is 150 km away from where they love. Joe leaves home at noon, traveling 50 km.her. True or False: If Sadie leaves home at 1:30 pm and travels at 75 km/hr, she will meet Joe in Springfield on time
False
Scalar measurements have both magnitude and direction
False
The slope of a position-time graph of an object gives the speed of the object.
False
Time = 38 seconds, position = 150 meters
Given below is the graph representing the potion-time grapes of 2 swimmers (A and B), swimming in a pool along a straight line. Both the swimmers start from two different positions. Using the graph when and where does swimmer B pass swimmer A?
5
How many significant figures are in the number 0.0037010?
6
How many significant figures are in the number 120.070?
0.2500 miles
If a drag racer wins the final round of her race by going an average speed of 198.37 miles per hour in 4.537 seconds, what distance did she cover?
True
In a chose coordinate system, the position of an object in motion can have negative values
Origin
In a coordinate system, the point at which both variables have a value of zero i called the
2
In the difference A - B - C, A is accurate to 5 decimal places, B is accurate to 2 decimal places, and C is accurate to 3 decimal places. What is the correct number of decimal places in the difference?
2
In the quotient A/(BxC) , A has 5 significant figures, B has 2 significant figures, and C has 3 significant figures. How many significant figures does the quotient have?
Speed
The absolute value of the average velocity is the average
Theory
a detailed explanation of some aspect of nature that accounts for a set of well-tested hypotheses
Observation
a logical and orderly description of an event
Inference
a logical interpretation based on observations
Average Velocity
the displacement of an object per unit of time
Coordinate system
the frame of reference used to describe a system or an event
Slope
the rise over the run for a line on a graph
1.09 x 101km
A car is moving with a uniform speed of 15.0 m/s along a straight path. What is the distance covered by the car in 12.0 minutes
Hypothesis
A detailed explanation for a set of observations that can be verified or rejected by careful experiments.
Mass
A measure of the amount of matter in an object.
Weight
A measure of the gravitational force acting on an object
Bias
A preference for a particular point of view due to personal rather than scientific reasons.
Vector
A quantity consisting of both a numerical with its unit and a direction
4.64 x 10^7
Add 1299 g and 45.1 kg and express your answer in milligrams (mg) to the correct number of significant figures.
Significant Figures
The digits actually measured plus one estimated digit in a properly expressed measurement.
displacement
The final position minus the initial position is the
time interval
The final time minus the initial time equals the
0.682 m^2
The length and width of a rectangle are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the correct number of significant figures, the area of the rectangle should be written as
distance
The magnitude of a displacement vector represents the
3.25 x 10^-10 mm
The number 0.00325 x 10^-8 cm can be expressed in millimeters as
10 meters
The position-time graph below represents the motion of Ted returning home from the market on his bike. WHat is Ted's displacement during the time interval from t = 1 second to t = 3 seconds?
false
The y-intercept of a position-time graph of an object gives the average velocity of the object
A collision between two moving objects can be represented on a position-time graph
True
A time interval is a scalar quantity
True
The average velocity is defined as the ratio of the change of position to the time interval during which the change occurred
True
The position-time graph of an object moving with a constant average velocity is always a straight line.
True
0.91
What is 0.674/0.74 expressed to the correct number of significant figures?
Time and speed
What is a pair of scalar quantities
26.6
What is the product of 12.56 and 2.12 expressed to the correct number of significant figures?
6.7
What is the sum of 2.67 + 1.976 + 2.1 expressed to the correct number of significant figures?
Velocity and displacement
Which of the following is a pair of vector quantities?
1.776 x 10^-4
Which one of the following numbers is equivalent to the number 0.0001776?
Science
an organized way of thinking about nature and understanding how it works
Displacement
the change in the position of an object
Average Speed
the speed of an object averaged over a given period of time
Physics
the study of fundamental laws of nature
Scientific Method
the sytematic approach scientists use to learn about the laws of nature
Distance
the total length of the path taken on a trip
independent variable
the variable that is changed in an experiment
Dependent Variable
the variable that is measured in an experiment to see how it depends on the independent variable