WorksheetsGrade 10 Physics Revision
Total questions: 108
Worksheet time: 1hrs 9mins
Identify the following quantities as scalar or vector: the mass of an object, the number of leaves on a tree, wind velocity.
Identify the following quantities as scalar or vector: the speed of a snail, the time it takes to run a mile, the free-fall acceleration.
How many displacement vectors shown in the figure above have horizontal components?
How many displacement vectors shown in the figure above have components that lie along the y-axis and are pointed in the –y direction?
Which displacement vectors shown in the figure above have vertical components that are equal?
An airplane with a mass of 1.20 10^4 kg tows a glider with a mass of
Acceleration is defined as
a rate of displacement
the change in velocity
the rate of change of displacement
the rate of change of velocity
What does the graph above illustrate about acceleration?
The acceleration varies
The acceleration is zero
The acceleration is constant
The acceleration increases then becomes constant
What is the speed of an object at rest?
0.0 m/s
9.8 m/s
1.0 m/s
9.81 m/s
Which of the following is a physical quantity that has both magnitude and direction?
vector
resultant
scalar
frame of reference
According to the graph above, the cat has the fastest speed during which interval?
0.0–5.0 s
10.0–15.0 s
5.0–10.0 s
15.0–20.0 s
In the graph above, how does the acceleration at A compare with the acceleration at B?
The acceleration at A is positive and less than the acceleration at B
The acceleration at B is positive and less than the acceleration at A
The accelerations at A and B are each zero
The accelerations at A and B cannot be determined
According to the graph above, during which interval does the cat have the greatest positive velocity?
0.0–5.0 s
10.0–15.0 s
5.0–10.0 s
15.0–20.0 s
When there is no air resistance, objects of different masses dropped from rest
fall with equal accelerations and with equal displacements
fall with different accelerations and with different displacements
fall with equal accelerations and with different displacements
fall with different accelerations and with equal displacements
According to the graph above, during which interval is the cat at rest?
0.0–5.0 s
10.0–15.0 s
5.0–10.0 s
15.0–20.0 s
Acceleration due to gravity is also called
negative velocity
free-fall acceleration
displacement
instantaneous acceleration
Which of the following is the equation for average velocity?
v avg = Δx/Δt
v avg = ΔxΔt
v avg = Δt/Δx
v avg = vi - vf / 2
Objects that are falling toward Earth in free fall move
faster and faster
at a constant velocity
slower and slower
slower then faster
In a coordinate system, a vector is oriented at angle with respect to the x-axis. The x component of the vector equals the vector’s magnitude multiplied by which trigonometric function?
cos
sin
cot
tan
The graph above describes the motion of a cyclist. During the interval shown, the cyclist is
slowing down
traveling at the same speed
speeding up
at rest
Multiplying or dividing vectors by scalars results in
vectors
scalars
vectors if multiplied or scalars if divided
scalars if multiplied or vectors if divided
Which of the following units is the SI unit of velocity?
meter
meter per second
metersecond
second per meter
Which of the following is the equation for acceleration?
a = Δt/Δv
a = Δv/Δt
a = ΔvΔt
vi - vf / ti - tf
A car travels down a road at a certain velocity, vcar. The driver slows down so that the car is traveling only half as fast as before. Which of the following is the correct expression for the resulting velocity?
2vcar
1/2vcar
–1/2vcar
–2vcar
Which of the following is a physical quantity that has a magnitude but no direction?
vector
resultant
scalar
frame of reference
The graph above describes the motion of a cyclist. The graph illustrates that the acceleration of the cyclist
is constant
increases
decreases
is zero
In a coordinate system, a vector is oriented at angle with respect to the x-axis. The y component of the vector equals the vector’s magnitude multiplied by which trigonometric function?
cos
sin
cot
tan
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?
the feather
the metal bolt
They would hit the ground at the same time
They would be suspended in a vacuum
Which of the following situations represents a negative displacement? (Assume positive position is measured vertically upward along a y-axis.)
A cat stands on a tree limb.
A cat jumps from the ground onto a tree limb.
A cat jumps from a lower tree limb to a higher one.
A cat jumps from a tree limb to the ground.
Which of the following is a physical quantity that has a magnitude but no direction?
vector
resultant
scalar
frame of reference
What is the SI unit of acceleration?
m/s
m/s^2
m^2/s
ms^2
The written abbreviation, a, represents a quantity that has which of the following abbreviations in the text?
ac.a
ad.a
When a car’s velocity is negative and its acceleration is negative, what is happening to the car’s motion?
The car slows down
The car travels at constant speed
The car speeds up
The car remains at rest
Which of the following line segments on a velocity versus time graph is physically impossible?
horizontal line
straight line with negative slope
straight line with positive slope
vertical line
Which would fall with greater acceleration in a vacuum—a leaf or a stone?
the leaf
the stone
They would accelerate at the same rate
It is difficult to determine without more information
The graph above describes the motion of a ball. At what point does the ball have an instantaneous velocity of zero?
A
C
B
D
Which of the following line segments on a position versus time graph is physically impossible?
a horizontal line
a straight line that slopes to the right
a straight line that slopes to the left
a vertical line
Which of the following is an example of a vector quantity?
velocity
volume
temperature
mass
In the graph above, a toy car rolls from +3 m to +5 m. Which of the following statements is true?
xf = +3 m
xi = +3 m
Δx = +3 m
v avg = 3 m/s
A student walks from the door of the house to the end of the driveway and realizes that he missed the bus. The student runs back to the house, traveling three times as fast. Which of the following is the correct expression for the return velocity if the initial velocity is vstudent?
3vstudent
1/3vstudent
–1/3vstudent
–3vstudent
In the figure above, the magnitude of the ball’s velocity is greatest at location
A
C
B
D
The motion of a ball on an inclined plane is described by the equation Δx = 1/2 a(Δt)^2. Which of the following quantities must have a value of zero?
xi
vi
xf
tf
In the figure above, which diagram represents the vector subtraction C = A–B?
I
II
III
IV
Suppose you are given a position versus time graph. The slope of a line drawn tangent to a point on the curve of this graph describes what quantity?
acceleration
instantaneous velocity
displacement
position
A football player runs in one direction to catch a pass, then turns and runs twice as fast in the opposite direction toward the goal line. Which of the following is a correct expression for the original velocity and the resulting velocity?
–vplayer, –2vplayer
vplayer, –2vplayer
vplayer, 2vplayer
2vplayer, –vplayer
A baseball catcher throws a ball vertically upward and catches it in the same spot as it returns to the mitt. At what point in the ball’s path does it experience zero velocity and nonzero acceleration at the same time?
midway on the way up
at the top of its path
the instant it leaves the catcher’s hand
the instant before it arrives in the catcher’s mitt
Which of the following is the best coordinate system to analyze a painter climbing a ladder at an angle of 60° to the ground?
x-axis: horizontal along the ground; y-axis: along the ladder
x-axis: along the ladder; y-axis: horizontal along the ground
x-axis: horizontal along the ground; y-axis: up and down
x-axis: along the ladder; y-axis: up and down
What is the path of a projectile (in the absence of friction)?
a wavy line
a parabola
a hyperbola
Projectiles do not follow a predictable path.
In a coordinate system, the magnitude of the x component of a vector and , the angle between the vector and x-axis, are known. The magnitude of the vector equals the x component
divided by the cosine of
multiplied by the cosine of
divided by the sine of
multiplied by the sine of
For the winter, a duck flies 10.0 m/s due south against a gust of wind with a speed of 2.5 m/s. What is the resultant velocity of the duck?
12.5 m/s south
7.5 m/s south
–12.5 m/s south
–7.5 m/s south
A piece of chalk is dropped by a teacher walking at a speed of 1.5 m/s. From the teacher’s perspective, the chalk appears to fall
straight down.
straight down and forward.
straight down and backward.
straight backward.
When a car’s velocity is positive and its acceleration is negative, what is happening to the car’s motion?
The car slows down
The car travels at constant speed
The car speeds up
The car remains at rest
Which of the following is the cause of an acceleration?
speed
force
inertia
velocity
In the figure above, at which point is the ball’s speed about equal to the speed at which it was tossed?
A
C
B
D
Which of the following is the motion of objects moving in two dimensions under the influence of gravity?
horizontal velocity
vertical velocity
directrix
projectile motion
The graph above describes the motion of a ball. At what point is the speed of the ball equal to its speed at B?
A
C
D
none of the above
Which of the following is an example of projectile motion?
a jet lifting off a runway
a thrown baseball
an aluminum can dropped straight down into the recycling bin
a space shuttle being launched
The length of a force vector represents the
cause of the force.
magnitude of the force.
direction of the force.
type of force.
The graph above describes the motion of a ball. At what point is the velocity of the ball equal to its velocity at B?
A
C
D
none of the above
What causes a moving object to change direction?
acceleration
inertia
velocity
force
In the figure above, the magnitude of the ball’s velocity is least at location
A
C
B
D
Which of the following forces arises from direct physical contact between two objects?
gravitational force
fundamental force
contact force
field force
Which of the following is a coordinate system for specifying the precise location of objects in space?
x-axis
frame of reference
y-axis
diagram
If you know the acceleration of a car, its initial velocity, and the time interval, which of the following can you predict?
the direction of the car’s final velocity
the magnitude of the car’s final velocity
the displacement of the car
all of the above
A free-body diagram represents all of the following except
the object.
forces exerted by the object.
forces as vectors.
forces exerted on the object.
Which of the following does not exhibit parabolic motion?
a frog jumping from land into water
a basketball thrown to a hoop
a flat piece of paper released from a window
a baseball thrown to home plate
In the figure above, the horizontal component of the ball’s velocity at A is
zero
equal to the vertical component of the ball’s velocity at C
equal in magnitude but opposite in direction to the horizontal component of the ball’s velocity at D
equal to the horizontal component of its initial velocity
Two students are standing on a fire escape, one twice as high as the other. Simultaneously, each drops a ball. If the first ball strikes the ground at time Δt1, when will the second ball strike the ground? (Disregard air resistance. Assume a = -g = -9.81 m/s^2.)
Δt2 = 4Δt1
Δt2 = 2Δt1
Δt2 = 2Δt1
Δt2 = 5/4Δt1
Which of the following statements does not describe force?
Force causes objects at rest to remain stationary.
Force causes objects to start moving.
Force causes objects to stop moving.
Force causes objects to change direction.
Which of the following is the tendency of an object to maintain its state of motion?
acceleration
force
inertia
velocity
A free-body diagram of a ball falling in the presence of air resistance would show
only a downward arrow to represent the force of air resistance.
only a downward arrow to represent the force due to gravity.
a downward arrow to represent the force due to gravity and an upward arrow to represent the force of air resistance.
an upward arrow to represent the force due to gravity and a downward arrow to represent the force of air resistance.
A passenger on a bus moving east sees a man standing on a curb. From the passenger’s perspective, the man appears to
stand still.
move west at a speed that is less than the bus’s speed.
move west at a speed that is equal to the bus’s speed.
move east at a speed that is equal to the bus’s speed.
A newton is equivalent to which of the following quantities?
kg
kgm/s^2
kgm/s
kg(m/s)^2
An ant on a picnic table travels 3.0 101 cm eastward, then 25 cm northward, and finally 15 cm westward. What is the magnitude of the ant’s displacement relative to its original position?
70 cm
52 cm
57 cm
29 cm
A car goes forward along a level road at constant velocity. The additional force needed to bring the car into equilibrium is
greater than the normal force times the coefficient of static friction.
equal to the normal force times the coefficient of static friction.
the normal force times the coefficient of kinetic friction.
zero.
In the graph above, what is the correct description of any location to the left of the zero?
negative displacement
negative position
negative distance
negative change of displacement
If a nonzero net force is acting on an object, then the object is definitely
at rest.
being accelerated.
moving with a constant velocity.
losing mass.
The free-body diagram shown above represents a car being pulled by a towing cable. In the diagram, the 5800 N force is
the gravitational force acting on the car.
the backward force the road exerts on the car.
the upward force the road exerts on the car.
the force exerted by the towing cable on the car.
A waitperson carrying a tray with a platter on it tips the tray at an angle of 12 below the horizontal. If the gravitational force on the platter is 5.0 N, what is the magnitude of the force parallel to the tray that tends to cause the platter to slide down the tray? (Disregard friction.)
0.42 N
1.0 N
4.9 N
5.0 N
Which of the following statements applies to the motion of a ball rising and then falling in free fall? I. The ball has constant acceleration as it moves upward. II. The ball has constant acceleration at the top of its path. III. The ball has constant acceleration as it moves downward.
I only
III only
I and III
I, II, and III
The statement by Newton that for every action there is an equal but opposite reaction is which of his laws of motion?
first
second
third
fourth
Which of the following is not an example of projectile motion?
a volleyball served over a net
a hot-air balloon drifting toward Earth
a baseball hit by a bat
a long jumper in action
A track star in the long jump goes into the jump at 12 m/s and launches herself at 20.0° above the horizontal. What is the magnitude of her horizontal displacement? (Assume no air resistance and that a y = –g = –9.81 m/s2.)
4.6 m
13 m
9.2 m
15 m
A hammer drives a nail into a piece of wood. Identify an action-reaction pair in this situation.
The nail exerts a force on the hammer; the hammer exerts a force on the wood.
The hammer exerts a force on the nail; the wood exerts a force on the nail.
The hammer exerts a force on the nail; the nail exerts a force on the hammer.
The hammer exerts a force on the nail; the hammer exerts a force on the wood.
Which of the following exhibits parabolic motion?
a stone thrown into a lake
a leaf falling from a tree
a space shuttle orbiting Earth
a train moving along a flat track
At what point of the ball’s path shown in the figure above is the vertical component of the ball’s velocity zero?
A
C
B
D
Which statement about the acceleration of an object is correct?
The acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to the mass of the object.
The acceleration of an object is directly proportional to the net external force acting on the object and directly proportional to the mass of the object.
The acceleration of an object is inversely proportional to the net external force acting on the object and inversely proportional to the mass of the object.
The acceleration of an object is inversely proportional to the net external force acting on the object and directly proportional to the mass of the object.
According to Newton’s second law, when the same force is applied to two objects of different masses,
the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration.
the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration.
the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration.
the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.
Which are simultaneous equal but opposite forces resulting from the interaction of two objects?
net external forces
field forces
gravitational forces
action-reaction pairs
A hockey stick hits a puck on the ice. Identify an action-reaction pair in this situation.
The stick exerts a force on the puck; the puck exerts a force on the stick.
The stick exerts a force on the puck; the puck exerts a force on the ice.
The puck exerts a force on the stick; the stick exerts a force on the ice.
The stick exerts a force on the ice; the ice exerts a force on the puck.
A measure of the quantity of matter is
density
force
weight
mass
A single force acts on an object. The components of this force act along the +x-axis and the –y-axis. The single force that will bring the object into equilibrium has components that act along the
+x-axis and +y-axis
–x-axis and +y-axis
+x-axis and –y-axis
–x-axis and –y-axis
In general, Fnet equals
Ff
Fn
Fg
ΣF
The magnitude of the gravitational force acting on an object is
frictional force
inertia
weight
mass
A change in the gravitational force acting on an object will affect the object’s
mass
weight
coefficient of static friction
inertia
A leaf falls from a tree and lands on the sidewalk. Identify an action-reaction pair in this situation.
The tree exerts a force on the leaf; the sidewalk exerts a force on the leaf.
The leaf exerts a force on the sidewalk; the sidewalk exerts a force on the leaf.
The leaf exerts a force on the tree; the sidewalk exerts a force on the leaf.
The leaf exerts a force on the sidewalk; the tree exerts a force on the leaf.
As an object falls toward Earth,
the object does not exert a force on Earth.
the object exerts a downward force on Earth.
Newton’s third law does not apply.
the upward acceleration of Earth is negligible because of its large mass.
A sculpture is suspended in equilibrium by two cables, one from a wall and the other from the ceiling of a museum gallery. Cable 1 applies a horizontal force to the right of the sculpture and has a tension, FT1. Cable 2 applies a force upward and to the left at an angle of 37.0 to the negative x-axis and has a tension, FT2. The gravitational force on the sculpture is 5.00 10^3 N. What is FT2?
4440 N
6640 N
8310 N
3340 N
A ball is dropped from a person’s hand and falls to Earth. Identify an action-reaction pair in this situation.
The hand exerts a force on the ball; Earth exerts a force on the hand.
Earth exerts a force on the ball; the hand exerts a force on Earth.
Earth exerts a force on the hand; the hand exerts a force on the ball.
Earth exerts a force on the ball; the ball exerts a force on Earth.
A crate is released on a frictionless plank inclined at angle with respect to the horizontal. Which of the following relationships is true? (Assume that the x-axis is parallel to the surface of the incline.)
Fy = Fg
Fy = Fx
Fx = 0
none of the above
As a basketball player starts to jump for a rebound, the player begins to move upward faster and faster until his shoes leave the floor. At the moment the player begins to jump, the force of the floor on the shoes is
greater than the player’s weight.
equal in magnitude and opposite in direction to the player’s weight.
less than the player’s weight.
zero.
Newton’s third law of motion involves the interactions of
one object and one force
one object and two forces
two object and one force
two objects and two forces
A net force of 6.8 N accelerates a 31 kg scooter across a level parking lot. What is the magnitude of the scooter’s acceleration?
0.22 m/s^2
0.69 m/s^2
3.2 m/s^2
4.6 m/s^2
A late traveler rushes to catch a plane, pulling a suitcase with a force directed 30.0 above the horizontal. If the horizontal component of the force on the suitcase is 60.6 N, what is the force exerted on the handle?
53.0 N
70.0 N
65.2 N
95.6 N
What is the magnitude of the scooter’s acceleration?
0.22 m/s^2
0.69 m/s^2
3.2 m/s^2
4.6 m/s^2
A jet moving at 500.0 km/h due east is in a region where the wind is moving at 120.0 km/h in a direction 30.00 north of east. What is the speed of the aircraft relative to the ground?
620.2 km/h
606.9 km/h
588.7 km/h
511.3 km/h
Two perpendicular forces, one of 45.0 N directed upward and the other of 60.0 N directed to the right, act simultaneously on an object with a mass of 35.0 kg. What is the magnitude of the resultant acceleration of the object?
2.14 m/s^2
3.00 m/s^2
5.25 m/s^2
1.41 m/s^2
Find the resultant of these two vectors: 2.00 102 units due east and 4.00 102 units 30.0 north of west.
300 units, 29.8 north of west
546 units, 59.3 north of west
581 units, 20.1 north of east
248 units, 53.9 north of west
