Home
Subjects
Explanations
Create
Study sets, textbooks, questions
Log in
Sign up
Upgrade to remove ads
Only $2.99/month
Chapter 2 Review
STUDY
Flashcards
Learn
Write
Spell
Test
PLAY
Match
Gravity
Terms in this set (43)
The displacement is either less than or equal to the distance traveled.
Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled.
only when the velocity is constant
When is the average velocity of an object equal to the instantaneous velocity?
average acceleration
A new car manufacturer advertises that their car can go "from zero to sixty in 8 s".
increasing its velocity by 2.0 m/s in every second.
An object moving in the +x axis experiences an acceleration of 2.0 m/s2. This means the object is
The car is decelerating, and its acceleration is negative.
Suppose that a car traveling to the East (+x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration
The car is decelerating, and its acceleration is positive.
Suppose that a car traveling to the West (-x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.
The acceleration must be equal to zero.
Suppose that an object is moving with a constant velocity. Make a statement concerning its acceleration.
no, and an example would be an object starting from rest
If the velocity of an object is zero, does it mean that the acceleration is zero? Support your answer with an example.
Yes, this is possible, and a rock thrown straight up is an example.
Can an object's velocity change direction when its acceleration is constant? Support your answer with an example.
In equal times its velocity changes by equal amounts.
Suppose that an object is moving with constant acceleration. Make a statement concerning its motion with respect to time.
Yes, and an example would be an object released from rest in the presence of air friction.
Can an object have increasing speed while its acceleration is decreasing? Support your answer with an example
It will have the same acceleration, both up the hill and down the hill.
Suppose a can, after an initial kick, moves up along a smooth hill of ice. Make a statement concerning its acceleration
The acceleration must be constant.
Under what condition is average velocity equal to the average of the object's initial and final velocity?
twice as fast
Objects A and B both start at rest. They both accelerate at the same rate. However, object A accelerates for twice the time as object B. What is the final speed of object A compared to that of object B?
four times as far
Objects A and B both start from rest. They both accelerate at the same rate. However, object A accelerates for twice the time as object B. What is the distance traveled by object A compared to that of object B?
None of the above is true
When an object is released from rest and falls in the absence of friction, which of the following is true concerning its motion?
Its acceleration is constant.
When an object is released from rest and falls in the absence of friction, which of the following is true concerning its motion?
Its velocity is zero and its acceleration is not zero.
Suppose a ball is thrown straight up. Make a statement about the velocity and the acceleration when the ball reaches the highest point.
exactly g
Suppose a ball is thrown straight up. What is its acceleration just before it reaches its highest point?
Its velocity points upward and its acceleration points downward.
Suppose a ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as the ball is going up.
Both its velocity and its acceleration point downward.
A ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as the ball is coming down.
its acceleration is constant
Suppose a ball is thrown downward in the absence of air resistance. Make a statement concerning its acceleration
it is essentially zero
Suppose a skydiver jumps from a high-flying plane. What is her acceleration when she she reaches terminal velocity?
4:1
A ball is thrown vertically upward with a speed v. An identical second ball is thrown upward with a speed 2v (twice as fast). What is the ratio of the maximum height of the second ball to that of the first ball? (How many times higher does the second ball go than the first ball?)
increases
Ball A is dropped from the top of a building. One second later, ball B is dropped from the same building. As time progresses, the distance between them
remains constant
Ball A is dropped from the top of a building. One second later, ball B is dropped from the same building. As time progresses, the difference in their speeds
they are traveling at the same speed
Two objects are thrown from the top of a tall building. One is thrown up, and the other is thrown down, both with the same initial speed. What are their speeds when they hit the street?
The two bricks accelerate at the same rate.
A brick is dropped from the top of a building. A second brick is thrown straight down from the same building. They are released at the same time. Neglect air resistance. Compare the accelerations of the two bricks.
a straight line making an angle with the time axis.
An object is moving with constant non-zero velocity in the +x axis. The position versus time graph of this object is
a parabolic curve
An object is moving with constant non-zero acceleration in the +x axis. The position versus time graph of this object is
a horizontal straight line
An object is moving with constant non-zero velocity in the +x axis. The velocity versus time graph of this object is
a straight line making an angle with the time axis.
An object is moving with constant non-zero acceleration in the +x axis. The velocity versus time graph of this object is
velocity
The area under a curve in an acceleration versus time graph gives
velocity
The slope of a position versus time graph gives
acceleration
The slope of a velocity versus time graph gives
moving with infinite speed
If the position versus time graph of an object is a vertical line, the object is
moving with constant non-zero speed
If the velocity versus time graph of an object is a horizontal line, the object is
moving with constant non-zero acceleration
If the velocity versus time graph of an object is a straight line making an angle of 30 degrees with the time axis, the object is
The car is decelerating, and its acceleration is positive.
Suppose that a car traveling to the West (-x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.
The displacement is either less than or equal to the distance traveled.
Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled.
only when the velocity is constant
When is the average velocity of an object equal to the instantaneous velocity?
The displacement is either less than or equal to the distance traveled.
Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled.
The displacement is either less than or equal to the distance traveled.
...
Sets with similar terms
Chapter 2: Kinematics in one direction
38 terms
Kinematics in one direction
40 terms
Chapter 2: Kinematics in one direction
18 terms
Physics
11 terms
Other sets by this creator
FSF2D/3U7: Les Expressions Idiomatiques
19 terms
French rules
8 terms