PHY 111 FINAL EXAM COMPETENCY REVIEW
2026 MOCK TEST COMPLETE KEY INSIGHTS
◉ You are trying to hit a friend with a water balloon. He is sitting in
the window of his dorm room directly across the street (you are at
the same height). You aim straight at him and shoot. Just wen you
shoot, he falls out of the window! Assuming the balloon has a large
enough horizontal velocity component to reach the building, does
the water balloon hit hi?
A. Yes
B. No
C. The shot is impossible
D. Maybe-- it depends on the speed of the shot.
Answer: A. Yes
◉ Which of the following cannot cause a car to have an acceleration?
A. The brakes on the car
B. The steering wheel
C. The windshield wipers
D. both (a) and (b).
Answer: C. The windshield
,◉ Which of the following units is not an SI base unit?
A. kilogram
B. second
C. meter
D. mile.
Answer: D. mile
◉ A motorcycle has a velocity of 24 m/s, due south as it passes a car
with a velocity of 15 m/s due north. What is the magnitude and
direction of the velocity of the motorcycle as seen by the driver or
car?
A. 39 m/s, south
B. 9 m/s, north
C. 39 m/s, north
D. 15 m/s, south.
Answer: A. 39 m/s, south
◉ Complete the following statement: The difference between speed
and velocity is
A. speed has a direction, but velocity does not
B. velocity is an average, but speed is always an instantaneous
measurement
C. velocity has a direction, but speed does not
,D. speed is an average value, but velocity is always an instantaneous
measurement.
Answer: C. velocity has a direction, but speed does not
◉ Usain Bolt set a world record for the 100.0-m run with a time of
9.58 s. If, after reaching the finish line, Mr.Bolt walked directly back
to his starting point in 90.9 s, what is the magnitude of his average
speed for the 200.0 m?
A. 10.0 m/s
B. 1.99 m/s
C. 0 m/s
D. 5.60 m/s.
Answer: C. 1.99 m/s
◉ A ball rolls off the edge of a table. The horizontal component of
the balls velocity remains constant during its entire trajectory
because
A. the ball is not acted upon by any force
B. the net force acting on the ball is zero
C. the ball is not acted upon by a force in the vertical direction
D. the ball is not acted upon by a force in the horizontal direction.
Answer: D. the ball is not acted upon by a force in the horizontal
direction
, ◉ Alice and Tom dive from an overhang into the lake below. Tom
simply drops straight down from the edge, but Alice takes a running
start and jumps 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 reaches the surface of the lake first
B. Tom reaches the surface of the lake first
C. Alice and Tom will reach the surface at the same time
D. none of these.
Answer: C. Alice and Tom will reach the surface at the same time
◉ A boy throws a rock with an initial velocity of 2.15 m/s at 30.0
degrees above the horizontal. If air resistance is negligible, how long
does it take for the rock to reach the maximum height of its
trajectory?
A. 0.110 s
B. 0.194 s
C. 0.215 s
D. 0.303 s.
Answer: A. 0.110 s
◉ The spring-loaded gun can launch projectiles at different angles
with the same launch speed. At what angle should the projectile be
launched in order to travel the greatest distance before landing?
2026 MOCK TEST COMPLETE KEY INSIGHTS
◉ You are trying to hit a friend with a water balloon. He is sitting in
the window of his dorm room directly across the street (you are at
the same height). You aim straight at him and shoot. Just wen you
shoot, he falls out of the window! Assuming the balloon has a large
enough horizontal velocity component to reach the building, does
the water balloon hit hi?
A. Yes
B. No
C. The shot is impossible
D. Maybe-- it depends on the speed of the shot.
Answer: A. Yes
◉ Which of the following cannot cause a car to have an acceleration?
A. The brakes on the car
B. The steering wheel
C. The windshield wipers
D. both (a) and (b).
Answer: C. The windshield
,◉ Which of the following units is not an SI base unit?
A. kilogram
B. second
C. meter
D. mile.
Answer: D. mile
◉ A motorcycle has a velocity of 24 m/s, due south as it passes a car
with a velocity of 15 m/s due north. What is the magnitude and
direction of the velocity of the motorcycle as seen by the driver or
car?
A. 39 m/s, south
B. 9 m/s, north
C. 39 m/s, north
D. 15 m/s, south.
Answer: A. 39 m/s, south
◉ Complete the following statement: The difference between speed
and velocity is
A. speed has a direction, but velocity does not
B. velocity is an average, but speed is always an instantaneous
measurement
C. velocity has a direction, but speed does not
,D. speed is an average value, but velocity is always an instantaneous
measurement.
Answer: C. velocity has a direction, but speed does not
◉ Usain Bolt set a world record for the 100.0-m run with a time of
9.58 s. If, after reaching the finish line, Mr.Bolt walked directly back
to his starting point in 90.9 s, what is the magnitude of his average
speed for the 200.0 m?
A. 10.0 m/s
B. 1.99 m/s
C. 0 m/s
D. 5.60 m/s.
Answer: C. 1.99 m/s
◉ A ball rolls off the edge of a table. The horizontal component of
the balls velocity remains constant during its entire trajectory
because
A. the ball is not acted upon by any force
B. the net force acting on the ball is zero
C. the ball is not acted upon by a force in the vertical direction
D. the ball is not acted upon by a force in the horizontal direction.
Answer: D. the ball is not acted upon by a force in the horizontal
direction
, ◉ Alice and Tom dive from an overhang into the lake below. Tom
simply drops straight down from the edge, but Alice takes a running
start and jumps 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 reaches the surface of the lake first
B. Tom reaches the surface of the lake first
C. Alice and Tom will reach the surface at the same time
D. none of these.
Answer: C. Alice and Tom will reach the surface at the same time
◉ A boy throws a rock with an initial velocity of 2.15 m/s at 30.0
degrees above the horizontal. If air resistance is negligible, how long
does it take for the rock to reach the maximum height of its
trajectory?
A. 0.110 s
B. 0.194 s
C. 0.215 s
D. 0.303 s.
Answer: A. 0.110 s
◉ The spring-loaded gun can launch projectiles at different angles
with the same launch speed. At what angle should the projectile be
launched in order to travel the greatest distance before landing?
