# Mastering Physics 2

## Unlock all answers in this set

question at some instant in time between t=1 and t=4
At what time(s) do the rockets have the same velocity? at time t=1 only at time t=4 only at times t=1 and t=4 at some instant in time between t=1 and t=4 at no time shown in the figure
question at times t=1 and t=4
At what time(s) do the rockets have the same x position? ANSWER: at time t=1 only at time t=4 only at times t=1 and t=4 at some instant in time between t=1 and t=4 at no time shown in the figure
question at no time shown in the figure
At what time(s) do the two rockets have the same acceleration? at time t=1 only at time t=4 only at times t=1 and t=4 at some instant in time between t=1 and t=4 at no time shown in the figure
question and nonzero acceleration
The motion of the rocket labeled A is an example of motion with uniform (i.e., constant) __________. ANSWER: and nonzero acceleration velocity position time
question velocity
The motion of the rocket labeled B is an example of motion with uniform (i.e., constant) __________. ANSWER: and nonzero acceleration velocity position time
question before t=1 and after t=4
At what time(s) is rocket A ahead of rocket B? before t=1 only after t=4 only before t=1 and after t=4 between t=1 and t=4 at no time(s) shown in the figure
question vave[0,1] = 0 m/s
Consulting the graph shown in the figure, find the object's average velocity over the time interval from 0 to 1 second.
question vave[1,3] = 20 m/s
Find the average velocity over the time interval from 1 to 3 seconds.
question vave[0,3] = 13.3 m/s
Now find vave[0,3].
question vave[3.0,6.0] = -13.3 m/s
Find the average velocity over the time interval from 3 to 6 seconds.
question vave[0.0,6.0] = 0 m/s
Finally, find the average velocity over the whole time interval shown in the graph.
question D
At which of the times do the two cars pass each other?
question No
Are the two cars traveling in the same direction when they pass each other?
question none
At which of the lettered times, if any, does car #1 momentarily stop? A B C D E none cannot be determined
question C
At which of the lettered times, if any, does car #2 momentarily stop? A B C D E none cannot be determined
question A
At which of the lettered times are the cars moving with nearly identical velocity? A B C D E none cannot be determined
question Graph 2
time (s) 0 1 2 3 4 5 6 7 8 9 x (m) 0 1 4 9 16 24 32 40 46 48
question Graph 4
time (s) 0 1 2 3 4 5 6 7 8 9 x (m) 0 1 4 9 16 24 32 40 46 48
question Graph 3
time (s) 0 1 2 3 4 5 6 7 8 9 x (m) 0 1 4 9 16 24 32 40 46 48
question
Direction
Answer the questions in this problem using words from the following list: position direction displacement coordinates velocity acceleration distance magnitude vector scalar components Velocity differs from speed in that velocity indicates a particle's __________ of motion.
question
Vector
Answer the questions in this problem using words from the following list: position direction displacement coordinates velocity acceleration distance magnitude vector scalar components Unlike speed, velocity is a __________ quantity.
question
Magnitude
Answer the questions in this problem using words from the following list: position direction displacement coordinates velocity acceleration distance magnitude vector scalar components A vector has, by definition, both __________ and direction.
question
Components
Answer the questions in this problem using words from the following list: position direction displacement coordinates velocity acceleration distance magnitude vector scalar components Once you have selected a coordinate system, you can express a two-dimensional vector using a pair of quantities known collectively as __________.
question
Distance
Answer the questions in this problem using words from the following list: position direction displacement coordinates velocity acceleration distance magnitude vector scalar components Speed differs from velocity in the same way that __________ differs from displacement.
question
Position, Displacement
Answer the questions in this problem using words from the following list: position direction displacement coordinates velocity acceleration distance magnitude vector scalar components Consider a physical situation in which a particle moves from point A to point B. This process is described from two coordinate systems that are identical except that they have different origins. The __________ of the particle at point A differ(s) as expressed in one coordinate system compared to the other, but the __________ from A to B is/are the same as expressed in both coordinate systems.
question
B
Cheetahs, the fastest of the great cats, can reach 50.0 miles/hour in 2.22 s starting from rest. Assuming that they have constant acceleration throughout that time, find their acceleration in meters per second squared.
question Cheetahs can reach vx = 50.0 miles/hour in t = 2.22 s starting from v0x=0. Assuming a=constant, what is ax?
Cheetahs, the fastest of the great cats, can reach 50.0 miles/hour in 2.22 s starting from rest. Assuming that they have constant acceleration throughout that time, find their acceleration in meters per second squared.
question
ax = 10.1 m/s2
Cheetahs, the fastest of the great cats, can reach 50.0 miles/hour in 2.22 s starting from rest. Assuming that they have constant acceleration throughout that time, find their acceleration in meters per second squared. Finally, you are ready to answer the main question. Cheetahs, the fastest of the great cats, can reach 50.0 miles/hour in 2.22 s starting from rest. Assuming that they have constant acceleration throughout that time, find their acceleration in meters per second squared.
question The acceleration of a cheetah is greater than the acceleration of a Thomson's gazelle but less than the acceleration of the space shuttle during liftoff.
Cheetahs, the fastest of the great cats, can reach 50.0 miles/hour in 2.22 s starting from rest. Assuming that they have constant acceleration throughout that time, find their acceleration in meters per second squared.
question 3rd Option
A stone is thrown upward from the edge of a cliff, reaches its maximum height, and then falls down into the valley below. A motion diagram for this situation is given in The figure shows a motion diagram of a stone thrown upward with velocity v. The stone is thrown at zero y-coordinate and zero time moment. The stone reaches a turning point when time t is equal to 2 seconds. Then, it reaches the bottom of the valley when time t is equal to 6 seconds. , beginning the instant the stone leaves the thrower's hand. Construct or select the corresponding motion graphs taking the magnitude of the acceleration due to gravity as exactly 10 m/s2. Ignore air resistance. In all three motion graphs, the unit of time is in seconds and the unit of displacement is in meters. In plotting the points, round-off the coordinate values to the nearest integer.
question
True
The kinematic equations for such motion can be written as x(t)=xi+vit+12at2, v(t)=vi+at, where the symbols are defined as follows: x(t) is the position of the particle; xi is the initial position of the particle; v(t) is the velocity of the particle; vi is the initial velocity of the particle; True or False: The quantity represented by x is a function of time (i.e., is not constant).
question
False
The kinematic equations for such motion can be written as x(t)=xi+vit+12at2, v(t)=vi+at, where the symbols are defined as follows: x(t) is the position of the particle; xi is the initial position of the particle; v(t) is the velocity of the particle; vi is the initial velocity of the particle; True or False: The quantity represented by xi is a function of time (i.e., is not constant).
question
False
The kinematic equations for such motion can be written as x(t)=xi+vit+12at2, v(t)=vi+at, where the symbols are defined as follows: x(t) is the position of the particle; xi is the initial position of the particle; v(t) is the velocity of the particle; vi is the initial velocity of the particle; True or False: The quantity represented by vi is a function of time (i.e., is not constant).
question
True
The kinematic equations for such motion can be written as x(t)=xi+vit+12at2, v(t)=vi+at, where the symbols are defined as follows: x(t) is the position of the particle; xi is the initial position of the particle; v(t) is the velocity of the particle; vi is the initial velocity of the particle; True or False: The quantity represented by v is a function of time (i.e., is not constant).
question t=2t1+vi/2a
At what time does the velocity of particle B equal that of particle A? t=t1+vi/4a t=2t1+vi/2a t=3t1+vi/2a
question v0 = 0.5 m/s
What is the initial velocity of the particle, v0?
question ?x = 75m
What is the total distance ?x traveled by the particle?
question aav = 0.075 m/s2  