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WorksheetsRL Summary of all units
Total questions: 114
Worksheet time: 7hrs 44mins
What is the average velocity of the person during the first 5 seconds?
0 m/s
1 m/s
3 m/s
6 m/s
What is the velocity of an object at the top of it's path?
0 m/s
9.8 m/s
-9.8 m/s/s
Depends on how fast it was moving initially
What is the acceleration of an object at the top of it's path?
0 m/s/s
9.8 m/s/s
-9.8 m/s/s
Depends on how quickly it was moving initially
If an object is dropped it has an acceleration of:
0 m/s
9.8 m/s/s
-9.8 m/s/s
If an object is thrown up it has an acceleration of:
0 m/s
9.8 m/s/s
-9.8 m/s/s
On the way up, an object's velocity is:
positive and increasing
positive and decreasing
negative and increasing
negative and decreasing
On the way down, an object's velocity is:
positive and increasing
positive and decreasing
negative and increasing
negative and decreasing
If your velocity and acceleration have opposite directions, you will:
Speed up
Slow down
Have constant velocity
If your velocity and acceleration have the same directions, you will:
Speed up
Slow down
Have constant velocity
If a tennis ball is falling, the position time graph for it will look like:
a straight horizontal line
a straight line with a positive slope
a straight line with a negative slope
a curve
Centripetal force, created by swinging something in a circle, acts in a direction--
along the path of motion
away from the center of the circle
toward the center of the circle
tangent to the circle
A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?
As the car goes around the curve, the centripetal force is directed--
toward the center of the circular curve
away from the center of the circular curve
tangent to the curve in the direction of motion
tangent to the curve opposite the direction of motion
A curved groove is place on the top of a level table as shown in the diagram. A ball is pushed in the groove at P so that it leaves at Q. Which picture shows how the ball will move when it leaves the groove at Q?
At the instant shown in the diagram, the car's centripetal acceleration is directed-
toward E
toward N
toward W
clockwise
At the position shown in the diagram, which arrow indicates the direction of the centripetal acceleration of the cart?
A
B
C
D
At the position shown in the diagram, which arrow indicates the direction the instantaneous velocity of the cart?
A
B
C
D
What is the unit of measurement for force?
m/s
N
cm
If all the forces acting upon an object at constant velocity are balanced, what will the the object do?
The object will stay at constant velocity
The object will slow down.
The object will accelerate.
The object will change position.
The force that is always perpendicular to the surface
Normal
Gravitational
Friction
Applied
The force that is also called the weight force
Normal
Gravitational
Friction
Applied
What are the units for weight?
Newtons
Pounds
Kilograms
Meters/second/second
An object's resistivity to changes in its motion is defined as:
Force
Weight
Inertia
Friction
Which of the following situations CAN be true if the net force is zero? (There may be more than one answer)
The object is moving at constant velocity
The object is at rest
The object is accelerating
The object is changing its motion
True or False: If your net force is to the right, you must be moving to the right.
True
False
How much tension must a rope withstand if it is used to accelerate a 1050 kg car horizontally at 1.20 m/s2? Ignore friction.
1260 N
875 N
.0011 N
1200 N
What average force is required to stop an 1100 kg car in 8.0 s if it is originally traveling at 25 m/s?
27500 N
3437.5 N
-27500 N
-3437.5 N
A 10 kg bucket is moved by a rope in which there is 63 N of tension. What is the acceleration of the bucket?
6.3 m/s/s
35 m/s/s
630 m/s/s
-3.5 m/s/s
A force of 40.0 N is required to start a 5.0 Kg box moving across a horizontal concrete floor. What is the coefficient of static friction between the box and the floor?
.816
.125
8
1.23
A 72-kg skydiver is falling from 10000 feet. At an instant during the fall, the skydiver encounters an air resistance force of 540 Newtons. Determine the acceleration of the skydiver at this instant.
-9.8 m/s/s
-17.3 m/s/s
-2.3 m/s/s
5.4 m/s/s
A 5.20-N force is applied to a 1.05-kg object to accelerate it rightwards across a friction-free surface. Determine the acceleration of the object. (Neglect air resistance.)
4.95 m/s/s
5.46 m/s/s
.202 m/s/s
0 m/s/s
A 5.20-N force is applied to a 1.05-kg object to accelerate it rightwards. The object encounters 3.29-N of friction. Determine the acceleration of the object. (Neglect air resistance.)
4.95 m/s/s
8.09 m/s/s
1.91 m/s/s
1.82 m/s/s
How far does a car go if you push with 5,000 N of force and do 18,000 J of work on it?
3.8 m
3.7 m
3.2 m
3.6 m
You push against the back of your friend's car that is stuck. You push and become very tired. Did you do work?
Yes, work was done
No, work wasn't done
Which equation represents kinetic energy?
1/2 m v2
1/2 k x2
mgh
v/t
A 5 kg ball is lifted 12 m above the ground. It's gravitational potential energy is about:
60 J
600 J
17 J
2.4 J
Suppose a cart has a kinetic energy of 0.5 J. If you add enough mass to double the mass and make the cart go three times as fast, its kinetic energy is now ---.
6 J
3 J
18 J
9 J
Momentum is the product of:
mass and velocity
mass and acceleration
force and velocity
force and acceleration
What causes a change in an object's momentum?
Mass
Velocity
Impulse
Time
If identical eggs are thrown, one at a wall and one at a bedsheet, both eggs will experience the same: (choose two answers)
Force
Time
Impulse
Change in Momentum
An elastic collision conserves
momentum only
energy only
both momentum and energy
neither momentum nor energy
An inelastic collision conserves
momentum only
energy only
both momentum and energy
neither momentum nor energy
Calculate the impulse on the ball.
The purpose of crumple zones on a car is to
decrease time of impact.
increase force of impact.
increase the time of impact.
decrease the impulse during impact.
Impulse can be found by looking at:
the area of a force vs. time graph
the area of a force vs. distance graph
the slope of a force vs. time graph
the slope of a force vs. distance graph
What property of this wave is represented by the letter "A"
amplitude
crest
trough
wavelength
A measurement made from crest to crest or trough to trough is defined as:
crest
trough
amplitude
wavelength
A string fixed at both ends, supports standing wave with a total of 4 nodes. If the length of the string is 12 m, what is the wavelength of the wave?
A) 4 m
B) 6 m
C) 6.67 m
D) 8 m
E) 12 m
Which of the following is equivalent to a Hz?
meters/second
1/meters
1/seconds
seconds/meter
A water wave has a period of 0.25 seconds and a wavelength of 0.6 meters. What is the speed of the wave?
2.4 meters
0.15 meters
0.85 meters
2.1 meters
What type of interference is represented in this diagram?
Constructive
Destructive
Which of these waves has the smallest amplitude?
P
Q
S
T
Which statement is correct about the wave shown in the diagram?
It is a transverse wave because the particles are moving perpendicular to the motion of the wave.
It is a transverse wave because the particles are moving parallel to the motion of the wave.
It is a longitudinal wave because the particles are moving perpendicular to the motion of the wave.
It is a longitudinal wave because the particles are moving parallel to the motion of the wave.
