PHYS STRAIGHTERLINE EXAM 2025
QUESTIONS AND ANSWERS
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?
- ANS 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? - ANS 5
Which of the following is involved in uniform circular motion? - ANS 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? - ANS Toa > To
How can you calculate the magnitude of a vector using scalar products? - ANS 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? - ANS Two
1|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D
, 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. - ANS false
Which of the following statements concerning friction between the surfaces of two objects is
correct? - ANS 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. - ANS 606 m
Which of the following statements concerning friction is incorrect? - ANS 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? - ANS 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? - ANS 42°
A vector is quantity that requires both magnitude and ________. - ANS 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? - ANS 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.) - ANS 9.6 m
2|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D
, 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? - ANS 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? - ANS 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 - ANS 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? - ANS 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. - ANS 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 ? - ANS 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? -
ANS 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? - ANS 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
____________. - ANS greater when the mass is farther from the center of the circle
3|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D
QUESTIONS AND ANSWERS
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?
- ANS 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? - ANS 5
Which of the following is involved in uniform circular motion? - ANS 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? - ANS Toa > To
How can you calculate the magnitude of a vector using scalar products? - ANS 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? - ANS Two
1|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D
, 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. - ANS false
Which of the following statements concerning friction between the surfaces of two objects is
correct? - ANS 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. - ANS 606 m
Which of the following statements concerning friction is incorrect? - ANS 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? - ANS 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? - ANS 42°
A vector is quantity that requires both magnitude and ________. - ANS 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? - ANS 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.) - ANS 9.6 m
2|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D
, 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? - ANS 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? - ANS 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 - ANS 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? - ANS 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. - ANS 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 ? - ANS 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? -
ANS 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? - ANS 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
____________. - ANS greater when the mass is farther from the center of the circle
3|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D
