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WorksheetsFall Semester Review #26-50
Total questions: 25
Worksheet time: 1hrs 15mins
An object is initially at a +5.0 m position and moves to -5 m position. What is its displacement?
10 m
0 m
12 m
-10.0 m
The 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 trajectory
the instant it leaves the catcher’s hand
the instant before it arrives in the catcher’s mitt
A car is traveling at an initial velocity of 4.5 m/s with an average acceleration of 0.85 m/s2. If the final velocity is 10.8 m/s, how much time has elapsed?
Equation: (a = Vf - Vi / t)
150 s
14.2 s
7.4 s
2.7 s
A ball rolls 15.0 m in 15.0 seconds. What is its average velocity?
Equation: (V = d/t)
15 m/s
1.0 m/s
30 m/s
1.5 m/s
A rock falls from the top of a cliff with an initial speed of 0 m/s. If the rock hits the ground after 2.0 s, what is the height of the cliff? (Disregard air resistance. g = 9.8 m/s2.)
dy = Vit + 1/2gt2
20 m
22 m
24 m
69 m
A model rocket flies horizontally off the edge of the cliff at a velocity of 50.0 m/s. If the canyon below is 100.0 m deep, how far from the edge of the cliff does the model rocket land?
2 step problem
dy = Vit + 1/2gt2
dx = Vx*t
112 m
337 m
225 m
400 m
What is the difference between speed and velocity?
Speed measures how far something has traveled, while velocity also tells you direction.
Speed measures how fast something has moved, while velocity also tells you direction.
Speed and velocity are basically the same thing.
Both speed and velocity will tell you how fast something moves, but speed also specifies a direction.
Bryan walks 20.0 m east, then walks directly north for another 40.0 m. What is the magnitude of his resultant displacement? [HINT: draw a diagram of the motion and solve it as a right triangle]
8.0 x 102 m, NE
44.7 m NE
2.0 x 104 m, NE
60 m, NE
A car accelerates from 35 m/s to 45 m/s in a time span of 2.3 seconds. What is the car’s acceleration?
a = Vf - Vi / t
15.2 m/s
19.6 m/s2
4.4 mph
4.35 m/s2
Which of the following best defines displacement?
Displacement is the total net distance an object in motion travels.
Displacement is a measure of distance between an object's starting point and its final point of motion along with direction
Displacement is the final trajectory of a projectile's motion.
Displacement is the total sum magnitude of a force's inertia.
Two girls run on a track. The girls begin at the starting point (see the graph/picture below). They run 4.5 laps and then stop. What is their displacement when they stop?
0 m
100 m
200 m
1800 m
Objects that are falling toward Earth _____.
experience a decrease in acceleration
free-fall at a constant velocity
experience an increase in speed
experience an increase in acceleration
A cat chases a mouse across a 1.0 m high table. The cat achieves a velocity of 3.0 m/s. Which of the following physics quantities can be used to describe the cat's motion?
The cat experiences vertical displacement.
They both accelerate at 3.0 m/s2.
The cat experiences horizontal displacement.
The mouse experiences emotional trauma.
If you ride your bicycle down a straight road for 3000 m, then turn around and ride back to where you started, your displacement is _____ the total distance you traveled.
greater than
equal to
less than
As an object drops off a table, what would be the initial velocity?
Positive
Negative
Zero
9.8 m/s
A bicyclist rides his bike at a constant velocity. How can his acceleration be described?
Zero
Positive
Negative
Changing
The path through which a projectile travels is called _____.
Displacement
Trajectory
Mechanical
Equilibrium
A football is thrown off from the roof of a tall building. The football accelerates ______.
In the x- direction (horizontally)
In the y-direction (vertically)
Both horizontally and vertically
Neither – velocity in both directions remains constant and unchanging
Two stones, A and B, are thrown horizontally from the top of a cliff. Stone A has an initial speed of 15 m/s and stone B has an initial speed of 30 m/s. Compared to the time it takes stone A to reach the ground and the time it takes stone B to reach the ground is _____.
the same
twice as great
half as great
four times as great
A shell is fired with a horizontal velocity in the positive x direction from the top of an 80 m high cliff. The shell strikes the ground 1330 m from the base of the cliff.
The most accurate way to determine the time the projectile spends in the air is to _____.
Use a stopwatch
Calculate it mathematically using one of the uniform acceleration equations
Count out loud as it falls: “1, 2, 3, …”
None of these is accurate
A shell is fired with a horizontal velocity in the positive x direction from the top of an 80 m high cliff. The shell strikes the ground 1330 m from the base of the cliff.
If a second shell is dropped vertically from the same height at the same time that the first shell was fired, which of the two shells would hit the ground first?
The first shell
The second shell
Both shells hit the ground at the same time
A baseball was thrown at an angle above the horizontal in definite parabolic motion. As a projectile it remained in the air for 2.8 seconds. Which of the following quantities was constant while the baseball was in the air?
Horizontal displacement
Vertical velocity
Vertical displacement
Horizontal velocity
Newton’s First Law of Motion is also known as the Law of _____.
Meters
Inertia
Equilibrium
Vectors
According to Newton’s second law of motion,
Acceleration = Force x mass
Force = mass x acceleration
Force = mass/acceleration
mass = Force x acceleration
The statement, “To every action there is an equal and opposite reaction” describes which Law of motion?
First
Second
Third
Fourth
