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CCP Physics 1 Review

Total questions: 59

Worksheet time: 2hrs 42mins

Name
Class
Date
1.

Centripetal force, created by swinging something in a circle, acts in a direction--

a)

along the path of motion

b)

away from the center of the circle

c)

toward the center of the circle

d)

tangent to the circle

2.

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?

a)
b)
c)
d)
3.

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?

a)
b)
c)
d)
4.
Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?
a)
0.25 ms-2
b)
0.5 ms-2
c)
1 ms-2
d)
2 ms-2
5.
Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.
a)
10 N
b)
20 N
c)
30 N
d)
40  N
6.
You are moving a ball in a circle using 72 N of centripetal force. What would the force be if you doubled the radius of the circle.
a)
18 N
b)
36 N 
c)
72 N
d)
144 N
7.
What is the force that causes centripetal acceleration when a car goes around a curve?
a)
Friction
b)
Gravity 
c)
Normal
d)
Tension
8.
A pilot experiences centripetal acceleration of 2g's while maneuvering a loop at a speed of 400 m/s.  What is the radius of the loop?
a)
203 m
b)
8163 m
c)
80,003 m
d)
23 m
9.

How does the force of gravity between two objects change when the distance between them is 5 times larger?

a)

5 times more

b)

5 times less

c)

25 times more

d)

25 times less

10.

How does the gravitational force the Earth exerts on the sun compare to the gravitational force the sun exerts on the Earth?

a)

The gravitational force the sun exerts on the Earth is larger

b)

The gravitational force the Earth exerts on the sun is larger

c)

Their gravitational forces are equal

d)

There is not enough information

11.

At what distance from the sun is the gravitational force due to the sun on an object zero?

a)

Once you get farther away than Pluto.

b)

It is not possible, the sun's gravity will always affect you

c)

50 light-years

d)

We do not know, since no man-made object has traveled that far

12.

What is the gravitational force between a 500 kg mass and a 2000 kg mass that are separated by a distance of 5 m?

a)

3.335 x 10-8

b)

2.668 x 10-6

c)

1.334 x 10-5

d)

6.67 x 10-9

13.

A yo-yo is whirled on a string, then the string breaks. What causes the yo-yo to move off in a straight line?

a)

centrifugal force

b)

centripetal force

c)

inertia

d)

centripetal acceleration

14.

As an astronaut travels far away from Earth, his weight

a)

increases because gravity increases.

b)

decreases because her mass decreases.

c)

remains the same because her mass remains the same.

d)

decreases because gravity decreases.

15.

A Ferris wheel has radius 5.0 m and makes one revolution every 8.0 s with uniform rotation. A person who normally weighs 670 N is sitting on one of the benches attached at the rim of the wheel. What is the apparent weight (the normal force exerted on her by the bench) of the person as she passes through the highest point of her motion?

a)

670 N

b)

460 N

c)

335 N

d)

580 N

16.

A car moving at a steady 10 m/s on a level highway encounters a depression that has a circular cross-section with a radius of 30 m. The car maintains its speed as it drives through the depression. What is the normal force exerted by the seat of the car on a 60.0-kg passenger when the car is at the bottom of the depression?

a)

390 N

b)

200 N

c)

590 N

d)

490 N

e)

790 N

17.

In what type(s) of collisions is kinetic energy conserved?

a)

Elastic collisions

b)

Inelastic collisions

c)

All collisions

18.

In what type(s) of collisions is momentum conserved conserved?

a)

Elastic Collisions

b)

Inelastic Collisions

c)

Both Elastic and Inelastic Collisions

d)

No collisions

19.

What does a crumple zone do?

a)

Increases time in collision, thereby decreasing the force of the collision

b)

Increases force in collision, thereby decreasing the time of the collision

c)

decreases force in collision, thereby increasing the time of the collision

d)

Decreases force in collision, thereby increasing the time of the collision

20.
A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?
a)
25 m/s
b)
375 m/s
c)
25 kg m/s
d)
375 kg m/s
21.
A large box slides across a frictionless surface with a velocity of 12 m/s and a mass of 4 kg,  collides with a smaller box with a mass of 2 kg that is stationary.  The boxes stick together. What is the velocity of the two combined masses after collision?
a)
0 m/s
b)
4 m/s
c)
8 m/s
d)
12 m/s
22.
A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?
a)
0 kgm/s
b)
30 kgm/s
c)
50 kgm/s
d)
10 kgm/s
23.
In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other.  The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s.  The carts stick together when they collide.  Calculate their final speed.
a)
0.5 m/s
b)
1.0 m/s
c)
0.33 m/s
d)
0.67 m/s
24.
A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s.  The impulse on the ball is  ______ N s.
a)
-2.5
.
.
b)
-10
c)
-18
d)
-45
25.
If an object has a mass "m" and increases it's speed by 2 times, what happens to the amount of kinetic energy?
a)
Increases by two
b)
Increases by four
c)
Decreases by two 
d)
Decreases by four
26.
As the weight lifter picks up a very heavy barbell. When he is lifting the barbell...
a)
He does no work
b)
He does positive work
c)
He does negative work
27.
If a crane lifts a small car 15 meters using 25,000 joules of work in 5 seconds, how much power was generated by the crane?
a)
5, 000 Watts
b)
1,667 Watts
c)
75 Watts
d)
375,000 Watts
28.
A 40 newton object is released from a height of 10 m. Just before it hits the ground, its kinetic energy, in joules is?
a)
a. 400
b)
b. 4
c)
c. 4000
29.
Mechanical energy is equal to the sum of Kinetic energy and _________ energy
a)
Thermal
b)
Potential
c)
Electrical
d)
Chemical
30.
Calculate the work needed to raise a 3 kg cat up to a height of 4 meters.
a)
12 J
b)
0 J
c)
120 J
d)
1.22 J
31.
A 40 kg crate is picked up by a crane to a height of 50m. The crate falls. What is the velocity of the crate just before it hits the ground?
a)
2000 Joules
b)
19,600 Joules
c)
19,600 m/s
d)
31.3 m/s
32.
Suppose you are designing an engineless car for a downhill coasting race.  What type of wheels would be the best?
a)
Solid disks.
b)
Hoops.
c)
Hollow cylinders.
d)
Diamond encrusted triangles.
33.
The drive chain in a bicycle is applying a torque of 0.850 N ∙ m to the wheel of the bicycle. You can treat the wheel as a thin uniform hoop (or ring) with a mass of 0.750 kg and a radius of 33.0 cm. What is the angular acceleration of the wheel?
a)
10.4 rad/s²
b)
3.43 rad/s²
c)
5.20 rad/s²
d)
1.06 rad/s²
34.
If the translational velocity of an object is 3 m/s, and is located a distance of 2 m from the axis of rotation, what is the object's angular velocity?
a)
0.67 rad/s
b)
1.5 rad/s
c)
5 rad/s
d)
6 rad/s
35.
Which would have a greater linear velocity?
a)
Kid near the center of the merry go round
b)
Kid near the outside of the merry go round
c)
neither
36.
How do you get the maximum torque?
a)
longer lever arm and more force at an acute angle
b)
shorter lever arm with more force perpendicularly
c)
shorter lever arm and more force perpendicularly
d)
longer lever arm with more force perpendicularly
37.
In the diagram above, two masses, one with mass m, the other with mass M = 2m are resting on a uniform plank of length L that pivots at its midpoint. If the mass m is at the far end of the plank, how far away from the pivot should the mass M be to balance the plank in a horizontal position shown?
a)
L/2
b)
L/3
c)
L/4
d)
L/6
38.
A person sits on a freely spinning lab stool that has no friction in its axle. When this person extends her arms,
a)
angular momentum is conserved, her moment of inertia increases and her angular speed decreases.
b)
angular momentum is conserved, her moment of inertia decreases and her angular speed increases.
c)
angular momentum increases, her moment of inertia increases and her angular speed increases.
d)
angular momentum decreases, her moment of inertia increases and her angular speed remains the same.
39.

A small vibrating object on the surface of a ripple tank is the source of waves of frequency 20 Hz and speed 60 cm/s. If the source S us moving to the right, as shown, with speed 20 cm.s, at which of the labeled points will the frequency measured by a stationary observer be the greatest?

a)

A

b)

B

c)

C

d)

D

40.

The figure shows a transverse wave traveling to the right at a particular instant of time. The period of the wave is 0.2 s. What is the amplitude of the wave?

a)

4 cm

b)

5 cm

c)

8 cm

d)

10 cm

41.

The figure shows a transverse wave traveling to the right at a particular instant of time. The period of the wave is 0.2 s. What is the speed of the wave?

a)

4 cm

b)

25 cm

c)

50 cm

d)

100 cm

42.

Two wave pulses are propagating along a straight line toward each other as shown above.

Which of the following is the resultant when the centers of the pulses align?

a)
b)
c)
d)
43.
How many wavelengths are there on a string vibrating at its fundamental frequency?
a)
1/4
b)
1/2
c)
1
d)
2
44.
A 1.5 m string is vibrating at its fundamental frequency of 440 Hz. What is the speed of the standing wave on the string?
a)
147 m/s
b)
293 m/s
c)
660 m/s
d)
1320 m/s
45.
Which of the following is true of an oscillating spring-mass system?
a)
The velocity is greatest when the potential energy is greatest.
b)
The kinetic energy is greatest when the force is greatest.
c)
The potential energy is greatest when the acceleration is greatest.
d)
The potential energy is greatest when the displacement is least.
46.
Which one of the following statements is true concerning an object executing simple harmonic motion?
a)
Its velocity is never zero.
b)
Its velocity and acceleration are simultaneously zero.
c)
Its velocity is zero when its acceleration is a maximum.
d)
Its maximum acceleration is equal to its maximum velocity.
47.
Standing waves are the result of which of the follow?
 
I. Reflection
II. Interference
III. Diffraction
a)
I only
b)
II only
c)
I and II only
d)
I and III only
48.
A 5 m rope is fixed at both ends.  What is the largest wavelength that could have a standing wave in this segment of rope?
a)
1.25 m
b)
2.5 m
c)
7.5 m
d)
10 m
49.
Through which of the following mediums does sound travel the fastest?
a)
a vacuum
b)
air
c)
salt water
d)
iron
50.
An echo is caused by which of the following?
a)
interference
b)
refraction
c)
resonance
d)
reflection
51.
Which of the following characteristics of a sound wave determines how loud it is?
a)
frequency
b)
wavelength
c)
speed
d)
amplitude
52.
A wave travels through a long rope with a wavelength of 20 m and a frequency of 4 Hz.  What is the velocity of the wave?
a)
0.2 m/s
b)
5 m/s
c)
80 m/s
d)
320 m/s
53.
The phenomena of beats can best be explained by
a)
diffraction
b)
interference
c)
the Doppler Shift
d)
total internal reflection
54.
Two pendulums are in simple harmonic motion.  Pendulum A is longer than pendulum B.  Pendulum A has a larger mass than B.  The period of pendulum A is
a)
longer than pendulum B
b)
shorter than pendulum B
c)
the same as pendulum B
d)
not enough information
55.
Two pipes of different length are resonating at their fundamental frequencies.  Which is true?
a)
The speed of sound is slower in the longer tube
b)
The speed of sound is slower in the shorter tube
c)
The frequency of the longer tube is higher
d)
The frequency of the shorter tube is higher
56.

A string with nodes at both ends is oscillating at the fundamental frequency. if the frequency of the string doubles, the wavelength will

a)

double

b)

get cut in half

c)

remain the same

d)

quadruple

57.
How many wavelengths are there on a string vibrating at its fundamental frequency?
a)
1/4
b)
1/2
c)
1
d)
2
58.

The pictured tube is 1.2 meters long. What is the wavelength of the wave inside?

a)

0.6 m

b)

1.2 m

c)

1.6 m

59.
Which position shows the spring with maximum kinetic energy?
a)
A
b)
B
c)
C
d)
D