PHYS -Straighterline Study Guide
Exam with Actual Detailed Answers
2025-2026 Updated.
An amusement park game consists of throwing a quarter into a small bowl. If you win, you get
to take home a giant purple stuffed elephant. The dish is on a shelf that is 0.4 m above the point
where the quarter leaves your hand. The horizontal distance between the bowl and the place
where the quarter leaves your hand is 1.8 m. Ignoring air drag, if you toss the quarter at an
angle of 60°, what initial velocity is needed to bring home the giant purple stuffed elephant? -
Answer 4.8 m / s
If the x-component of a vector is 3 and the y-component is 4, what is the magnitude of the
vector? - Answer 5
Which of the following is involved in uniform circular motion? - Answer constant angular
velocity
As shown, a crate of oranges and a crate of apples, each with a different mass, are attached by a
rope (with tension Toa). A second rope (To ) is attached to the crate of oranges, and the entire
system is pulled with a constant acceleration a by this rope. Which of the following is true of the
tensions? - Answer Toa > To
How can you calculate the magnitude of a vector using scalar products? - Answer Multiply it
by itself and take the square root.
Suppose you weigh an object and the reading you get from the scale is 0.0070 kg. How many
significant digits does your measurement have? - Answer Two
Consider two objects sliding down an incline without rolling. If the objects don't have the same
mass, the heavier object will accelerate at a faster rate than the lighter one. - Answer false
Which of the following statements concerning friction between the surfaces of two objects is
correct? - Answer The force of friction mostly depends on the nature of the two surfaces.
Calculate x=vt+1/2at2, where v = 0.227 m/s. t = 11.1s, and a = 9.80 m/s2. - Answer 606 m
Which of the following statements concerning friction is incorrect? - Answer The force of
static friction ( fs ) between parallel surfaces in contact is given by: fs = μsN.
,A car travels with a speed of 3.5 m / s, and then accelerates to 5.5 m / s in 4 s. Which of the
following is the average acceleration of the car? - Answer 0.5 m / s2
If the cross product of a vector of length 5 and a vector of length 3 results in a vector of length
10, what is the angle between them? - Answer 42°
A vector is quantity that requires both magnitude and ________. - Answer direction
King Kong is holding a woman on top of a skyscraper when she suddenly slips out of his hand.
How tall is the building if Superman has a minimum time of 2.30 s to catch the woman before
she hits the ground? - Answer 25.9 m
Kylie throws Kyra a kiwi. The kiwi leaves Kylie's hand at a height of 1.3 m from the ground and
Kyra grabs it out of the air at a height of 1.6 m. Kylie throws the kiwi at an angle of 33° relative
to the horizontal. The kiwi is in the air for 1.1 s. How far apart are Kylie and Kyra standing?
(Assume there is no drag force that no wind is blowing.) - Answer 9.6 m
A projectile is launched from a height of 250 m with initial horizontal velocity of 50 m/s. What is
the horizontal range of the projectile? - Answer 357 m
Imagine that you push down on an object that is sitting on a frictionless table. Which of the
following diagrams includes all the forces acting on the object? - Answer F W down, N up
Your cat chases a spider across the floor. Its position is a function of time is r + (1.2m/s)ti +
(0.7m + (0.5m/s2)t2)j, where the origin is the southwest corner of the floor. Find the average
speed of the cat between t = 0.0s and t = 4.0s - Answer 2.3 m/s
The position of an object along the x-axis is described by the formula x = 3t 2 − 2t. Which of the
following are the correct formulas for the velocity and acceleration of the object? - Answer v
= 6t − 2, a = 6
Using the conversion factor between kilograms and pounds, 1 kg = 2.205 lb, calculate how many
pounds are in 2.00 kg. - Answer 4.41 lb
An experimental new ride at an amusement park begins by spinning patrons about a circle of
radius R with constant speed v. At some point during the ride the speed doubles and the spokes
extend, doubling the radius. After this occurs, what is the acceleration of the patrons in terms of
the original acceleration, a ? - Answer 2a
, Consider a mass of 85kg lying on the ground. The coefficient of static friction between them is
us = 0.65. What is the minimum force you need to apply in order to slide the mass? - Answer
541 N
When turning around a circle, a car is subject to a continuous force, but its speed does not
necessarily change. Why is this true? - Answer The speed is not changing, but the direction
is.
A small mass is placed on a turntable that is rotating at 45 rpm. The centripetal acceleration is
____________. - Answer greater when the mass is farther from the center of the circle
How many significant figures are in the quantity
9.86 m/s 2? - Answer 3
Laura is listening to a record spinning at 45 rpm (revolutions per minute). When she switches
the speed selector on the record player to 33 rpm, it takes 2.7 seconds for the record player to
change to the new speed. How many revolutions does the record make during this time?
Assume that the angular acceleration of the record is constant. - Answer 1.8
A 309 g glass rolls down an incline and onto a horizontal platform where it hits a beverage can
that is laying at rest on its side. The top of the incline is 11.0 cm above the horizontal platform.
The beverage can is initially at rest and weighs 7.35 N. Which of following is the final velocity of
the glass? - Answer −0.612 m / s
This hourglass-shaped object is hung from a pivot point (round dot). Its center of gravity is
marked by a cross. If the object is free to rotate, what does it do? - Answer It does not move.
You are sparring in karate class. Your opponent, standing directly in front of you, throws a punch
straight into your chest. What stance will best allow you to take this punch without losing your
balance? - Answer left forward
A 0.500 kg steel ball is dropped from a height of 4.00 m onto a horizontal steel slab. The
collision appears elastic in that the ball rebounds to its original height. If the collision lasts for
2.00 × 10−3 s, which of the following is the impulse imparted to the ball and the average force
applied to the ball during the collision? - Answer I = 8.85 kg•m / s
F = 4.43 × 103 N
A spaceship is in space and currently at rest. The directive is given to accelerate from rest to a
speed of 2.90 × 103 m / s. If the fuel budgeted for this action is 400 kg, which of the
following is velocity of the exhaust gas required if the ship mass is 7.38 × 103 kg? - Answer
-5.5 × 104 [m / s]
Exam with Actual Detailed Answers
2025-2026 Updated.
An amusement park game consists of throwing a quarter into a small bowl. If you win, you get
to take home a giant purple stuffed elephant. The dish is on a shelf that is 0.4 m above the point
where the quarter leaves your hand. The horizontal distance between the bowl and the place
where the quarter leaves your hand is 1.8 m. Ignoring air drag, if you toss the quarter at an
angle of 60°, what initial velocity is needed to bring home the giant purple stuffed elephant? -
Answer 4.8 m / s
If the x-component of a vector is 3 and the y-component is 4, what is the magnitude of the
vector? - Answer 5
Which of the following is involved in uniform circular motion? - Answer constant angular
velocity
As shown, a crate of oranges and a crate of apples, each with a different mass, are attached by a
rope (with tension Toa). A second rope (To ) is attached to the crate of oranges, and the entire
system is pulled with a constant acceleration a by this rope. Which of the following is true of the
tensions? - Answer Toa > To
How can you calculate the magnitude of a vector using scalar products? - Answer Multiply it
by itself and take the square root.
Suppose you weigh an object and the reading you get from the scale is 0.0070 kg. How many
significant digits does your measurement have? - Answer Two
Consider two objects sliding down an incline without rolling. If the objects don't have the same
mass, the heavier object will accelerate at a faster rate than the lighter one. - Answer false
Which of the following statements concerning friction between the surfaces of two objects is
correct? - Answer The force of friction mostly depends on the nature of the two surfaces.
Calculate x=vt+1/2at2, where v = 0.227 m/s. t = 11.1s, and a = 9.80 m/s2. - Answer 606 m
Which of the following statements concerning friction is incorrect? - Answer The force of
static friction ( fs ) between parallel surfaces in contact is given by: fs = μsN.
,A car travels with a speed of 3.5 m / s, and then accelerates to 5.5 m / s in 4 s. Which of the
following is the average acceleration of the car? - Answer 0.5 m / s2
If the cross product of a vector of length 5 and a vector of length 3 results in a vector of length
10, what is the angle between them? - Answer 42°
A vector is quantity that requires both magnitude and ________. - Answer direction
King Kong is holding a woman on top of a skyscraper when she suddenly slips out of his hand.
How tall is the building if Superman has a minimum time of 2.30 s to catch the woman before
she hits the ground? - Answer 25.9 m
Kylie throws Kyra a kiwi. The kiwi leaves Kylie's hand at a height of 1.3 m from the ground and
Kyra grabs it out of the air at a height of 1.6 m. Kylie throws the kiwi at an angle of 33° relative
to the horizontal. The kiwi is in the air for 1.1 s. How far apart are Kylie and Kyra standing?
(Assume there is no drag force that no wind is blowing.) - Answer 9.6 m
A projectile is launched from a height of 250 m with initial horizontal velocity of 50 m/s. What is
the horizontal range of the projectile? - Answer 357 m
Imagine that you push down on an object that is sitting on a frictionless table. Which of the
following diagrams includes all the forces acting on the object? - Answer F W down, N up
Your cat chases a spider across the floor. Its position is a function of time is r + (1.2m/s)ti +
(0.7m + (0.5m/s2)t2)j, where the origin is the southwest corner of the floor. Find the average
speed of the cat between t = 0.0s and t = 4.0s - Answer 2.3 m/s
The position of an object along the x-axis is described by the formula x = 3t 2 − 2t. Which of the
following are the correct formulas for the velocity and acceleration of the object? - Answer v
= 6t − 2, a = 6
Using the conversion factor between kilograms and pounds, 1 kg = 2.205 lb, calculate how many
pounds are in 2.00 kg. - Answer 4.41 lb
An experimental new ride at an amusement park begins by spinning patrons about a circle of
radius R with constant speed v. At some point during the ride the speed doubles and the spokes
extend, doubling the radius. After this occurs, what is the acceleration of the patrons in terms of
the original acceleration, a ? - Answer 2a
, Consider a mass of 85kg lying on the ground. The coefficient of static friction between them is
us = 0.65. What is the minimum force you need to apply in order to slide the mass? - Answer
541 N
When turning around a circle, a car is subject to a continuous force, but its speed does not
necessarily change. Why is this true? - Answer The speed is not changing, but the direction
is.
A small mass is placed on a turntable that is rotating at 45 rpm. The centripetal acceleration is
____________. - Answer greater when the mass is farther from the center of the circle
How many significant figures are in the quantity
9.86 m/s 2? - Answer 3
Laura is listening to a record spinning at 45 rpm (revolutions per minute). When she switches
the speed selector on the record player to 33 rpm, it takes 2.7 seconds for the record player to
change to the new speed. How many revolutions does the record make during this time?
Assume that the angular acceleration of the record is constant. - Answer 1.8
A 309 g glass rolls down an incline and onto a horizontal platform where it hits a beverage can
that is laying at rest on its side. The top of the incline is 11.0 cm above the horizontal platform.
The beverage can is initially at rest and weighs 7.35 N. Which of following is the final velocity of
the glass? - Answer −0.612 m / s
This hourglass-shaped object is hung from a pivot point (round dot). Its center of gravity is
marked by a cross. If the object is free to rotate, what does it do? - Answer It does not move.
You are sparring in karate class. Your opponent, standing directly in front of you, throws a punch
straight into your chest. What stance will best allow you to take this punch without losing your
balance? - Answer left forward
A 0.500 kg steel ball is dropped from a height of 4.00 m onto a horizontal steel slab. The
collision appears elastic in that the ball rebounds to its original height. If the collision lasts for
2.00 × 10−3 s, which of the following is the impulse imparted to the ball and the average force
applied to the ball during the collision? - Answer I = 8.85 kg•m / s
F = 4.43 × 103 N
A spaceship is in space and currently at rest. The directive is given to accelerate from rest to a
speed of 2.90 × 103 m / s. If the fuel budgeted for this action is 400 kg, which of the
following is velocity of the exhaust gas required if the ship mass is 7.38 × 103 kg? - Answer
-5.5 × 104 [m / s]
