PHY 121 FINAL EXAM REVIEW QUESTION AND ANSWERS RATED A+
2025
1. Suppose that a car traveling to the west (the -
A) Its acceleration
x direc- tion) begins to slow down as it
is posi- tive but its
approaches a traffic light. Which statement
velocity is neg- ative.
concerning its acceleration in the x direction is
correct?
A) Its acceleration is positive but its velocity is
nega- tive.
B) Both its acceleration and its velocity are
negative.
C) Its acceleration is negative but its
velocity is posi- tive.
D) Both its acceleration and its velocity are C) decreases and
positive. then in-
2. The motion of a particle is described in the
velocity
versus time graph shown in the figure. We can say that creases.
its speed
A) decreases.
B) increases.
C)decreases and then increases.
D) increases and then decreases.
3. The figure shows the velocity of a particle as it travels B) in the -x
direction
along the x-axis. What is the direction of the
accelera- tion at t = 0.5 s?
,PHY 121 FINAL EXAM REVIEW QUESTION AND ANSWERS RATED A+
2025
A) in the +x direction
B) in the -x direction
C)The acceleration is zero.
4.
,PHY 121 FINAL EXAM REVIEW QUESTION AND ANSWERS RATED A+
2025
For general projectile motion, when the projectile is at C) its velocity
is perpen-
the highest point of its trajectory? dicular to the
acceleration.
A) its acceleration is zero.
B)the horizontal and vertical components of its
veloc- ity are zero.
C)its velocity is perpendicular to the
acceleration.
D) its velocity and acceleration are both zero.
E)the horizontal component of its velocity is
zero.
A) Alice and Tom will
5. Alice and Tom dive from an overhang into the reach
lake
below. Tom simply drops straight down from the edge, the surface of
the lake at
but Alice takes a running start and jumps the same time.
with an initial horizontal velocity of 25 m/s.
Neither person experiences any significant air
resistance. Compare the time it takes each of
them to reach the lake below.
A) Alice and Tom will reach the surface of the
lake at the same time.
B) Tom reaches the surface of the lake first.
C)Alice reaches the surface of the lake first.
6. A pilot drops a package from a plane flying horizontal- D) be over
the package.
ly at a constant speed. Neglecting air resistance,
when the package hits the ground the horizontal
, PHY 121 FINAL EXAM REVIEW QUESTION AND ANSWERS RATED A+
2025
location of the plane will
A) be behind the package.
B) be in front of the package.
C)depend of the speed of the plane when the
package was released.
D) be over the package.
2025
1. Suppose that a car traveling to the west (the -
A) Its acceleration
x direc- tion) begins to slow down as it
is posi- tive but its
approaches a traffic light. Which statement
velocity is neg- ative.
concerning its acceleration in the x direction is
correct?
A) Its acceleration is positive but its velocity is
nega- tive.
B) Both its acceleration and its velocity are
negative.
C) Its acceleration is negative but its
velocity is posi- tive.
D) Both its acceleration and its velocity are C) decreases and
positive. then in-
2. The motion of a particle is described in the
velocity
versus time graph shown in the figure. We can say that creases.
its speed
A) decreases.
B) increases.
C)decreases and then increases.
D) increases and then decreases.
3. The figure shows the velocity of a particle as it travels B) in the -x
direction
along the x-axis. What is the direction of the
accelera- tion at t = 0.5 s?
,PHY 121 FINAL EXAM REVIEW QUESTION AND ANSWERS RATED A+
2025
A) in the +x direction
B) in the -x direction
C)The acceleration is zero.
4.
,PHY 121 FINAL EXAM REVIEW QUESTION AND ANSWERS RATED A+
2025
For general projectile motion, when the projectile is at C) its velocity
is perpen-
the highest point of its trajectory? dicular to the
acceleration.
A) its acceleration is zero.
B)the horizontal and vertical components of its
veloc- ity are zero.
C)its velocity is perpendicular to the
acceleration.
D) its velocity and acceleration are both zero.
E)the horizontal component of its velocity is
zero.
A) Alice and Tom will
5. Alice and Tom dive from an overhang into the reach
lake
below. Tom simply drops straight down from the edge, the surface of
the lake at
but Alice takes a running start and jumps the same time.
with an initial horizontal velocity of 25 m/s.
Neither person experiences any significant air
resistance. Compare the time it takes each of
them to reach the lake below.
A) Alice and Tom will reach the surface of the
lake at the same time.
B) Tom reaches the surface of the lake first.
C)Alice reaches the surface of the lake first.
6. A pilot drops a package from a plane flying horizontal- D) be over
the package.
ly at a constant speed. Neglecting air resistance,
when the package hits the ground the horizontal
, PHY 121 FINAL EXAM REVIEW QUESTION AND ANSWERS RATED A+
2025
location of the plane will
A) be behind the package.
B) be in front of the package.
C)depend of the speed of the plane when the
package was released.
D) be over the package.
