AP Physics Grade A question and answer
Q1 Acceleration due to gravity on the moon
The acceleration due to gravity on the Moon is gM. Suppose an astronaut on the Moon
drops an object from a height of H. The time it would take the object to reach the Moon's
surface would be TM. The same object is dropped from the same height on Earth,
where the acceleration due to gravity is gE. The time it takes the object to reach Earth's
surface is TE. Which of the following is a correct mathematical relationship for the two
times? - (correct answer)Answer B) TE = √(gM/gE)TM
Q2 Acceleration vectors for cart on a track
Starting from rest, a cart moves to the right in a straight line along a track. The motion of
the cart is represented by the dots shown, recorded at equal time intervals. Which of the
following best represents the acceleration vectors at the beginning, middle, and end of
the motion? - (correct answer)Answer B) Arrow to the right, a = 0, Arrow to the left
Q3 Astronauts launch an object
Astronauts travel to another planet and wish to determine an accurate value for the
acceleration due to gravity. They drop an object from the edge of a very tall cliff and with
a motion sensor collect the data shown. If air resistance is negligible, the magnitude of
the acceleration of the projectile is most nearly - (correct answer)Answer E) 52.8 m/s^2
Q4 Calculus - position as a function of time
An object is moving along the x-axis, with position x given as a function of time t defined
by the equation x(t)=2t3−3t2−8t−3 . Which of the following equations indicates how to
determine the object's velocity v as a function of t ?
, An object is moving along the x-axis, with position x given as a function of time t defined
by the equation x(t)=2t^3−3t^2−8t−3. Which of the following equations indicates how to
determine the object's velocity v as a function of t? - (correct answer)Answer B) v(t) =
d/dt(2t^3-3t^2-8t-3)
Q5 Description of velocity from the graph
A small sphere is launched straight upward. The vertical position as a function of time is
shown in the graph.
Which of the following best describes the sphere's velocity during the time period
shown? - (correct answer)Answer C) The velocity is initially positive, decreases to zero,
and then becomes negative.
Q6 Linearize position-time data
A small sphere is launched straight upward. The vertical position as a function of time is
shown in the graph.
Which of the following relationships is best represented by the graph shown? - (correct
answer)Answer B) The position is directly related to time squared.
Q7 Graph of position-time squared
The data for the position x of a particle moving along a straight line is recorded at
various times t. The position is plotted as a function of t2. The data points are shown in
the graph. Which of the following shows an appropriate best-fit line for the data? -
(correct answer)Answer A) Graph of a negative linear line with 1st and 3rd point under
the line, 2nd and 4th line above the line, and the 5th point on the line
Q8 Motion of a block - Calculus
Q1 Acceleration due to gravity on the moon
The acceleration due to gravity on the Moon is gM. Suppose an astronaut on the Moon
drops an object from a height of H. The time it would take the object to reach the Moon's
surface would be TM. The same object is dropped from the same height on Earth,
where the acceleration due to gravity is gE. The time it takes the object to reach Earth's
surface is TE. Which of the following is a correct mathematical relationship for the two
times? - (correct answer)Answer B) TE = √(gM/gE)TM
Q2 Acceleration vectors for cart on a track
Starting from rest, a cart moves to the right in a straight line along a track. The motion of
the cart is represented by the dots shown, recorded at equal time intervals. Which of the
following best represents the acceleration vectors at the beginning, middle, and end of
the motion? - (correct answer)Answer B) Arrow to the right, a = 0, Arrow to the left
Q3 Astronauts launch an object
Astronauts travel to another planet and wish to determine an accurate value for the
acceleration due to gravity. They drop an object from the edge of a very tall cliff and with
a motion sensor collect the data shown. If air resistance is negligible, the magnitude of
the acceleration of the projectile is most nearly - (correct answer)Answer E) 52.8 m/s^2
Q4 Calculus - position as a function of time
An object is moving along the x-axis, with position x given as a function of time t defined
by the equation x(t)=2t3−3t2−8t−3 . Which of the following equations indicates how to
determine the object's velocity v as a function of t ?
, An object is moving along the x-axis, with position x given as a function of time t defined
by the equation x(t)=2t^3−3t^2−8t−3. Which of the following equations indicates how to
determine the object's velocity v as a function of t? - (correct answer)Answer B) v(t) =
d/dt(2t^3-3t^2-8t-3)
Q5 Description of velocity from the graph
A small sphere is launched straight upward. The vertical position as a function of time is
shown in the graph.
Which of the following best describes the sphere's velocity during the time period
shown? - (correct answer)Answer C) The velocity is initially positive, decreases to zero,
and then becomes negative.
Q6 Linearize position-time data
A small sphere is launched straight upward. The vertical position as a function of time is
shown in the graph.
Which of the following relationships is best represented by the graph shown? - (correct
answer)Answer B) The position is directly related to time squared.
Q7 Graph of position-time squared
The data for the position x of a particle moving along a straight line is recorded at
various times t. The position is plotted as a function of t2. The data points are shown in
the graph. Which of the following shows an appropriate best-fit line for the data? -
(correct answer)Answer A) Graph of a negative linear line with 1st and 3rd point under
the line, 2nd and 4th line above the line, and the 5th point on the line
Q8 Motion of a block - Calculus
