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Physics Final Assessment

Total questions: 50

Worksheet time: 38mins

Name
Class
Date
1.

This is a statement of which scientific law?


Object attract other objects with a force that is directly proportional to the product of their masses, and inversely proportional to the square of the distance between them.

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

d)

Newton's Law of Universal Gravitation

2.
Force of gravity is directly proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
3.
Force of gravity is inversely proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
4.

Which of the following is the Universal Law of Gravitation?

a)

F=Gm1m2/r

b)

F = Gm1m2/r2

c)

F = Gm1m2/2r

d)

F = m1m2/2r

5.
The law of universal gravitation is credited to whom?
a)
Einstein
b)
Galileo
c)
Darwin
d)
Newton
6.
The combination of all forces acting on an object is called __________
a)
Parallelogram Rule
b)
Net Force
c)
Vector Quantity
d)
All the Jedi's using their abilities together
7.

The law of inertia refers to...

a)

The universal law of gravitation

b)

Newton's 1st Law

c)

Newton's 2nd Law

d)

Newton's 3rd Law

8.

Newton's published work that contains his three laws of motion and his universal law of gravitation is entitled:

a)

The Elegant Universe

b)

Principia

c)

Sidereus Nuncias

d)

Astronomia Nova

9.

If there are two forces going in the same direction how would you find the net force?

a)

Subtract

b)

Add

c)

Divide

d)

Multiply

10.
Which of the following is the tendency of an object to maintain its state of motion?
a)
acceleration
b)
inertia
c)
velocity
d)
force
11.
A free-body diagram of a ball falling in the presence of air resistance would show 
a)
 a downward arrow to represent the force due to gravity and an upward arrow to represent the force of air resistance.
b)
an upward arrow to represent the force due to gravity and a downward arrow to represent the force of air resistance.
c)
only a downward arrow to represent the force of air resistance.
d)
only a downward arrow to represent the force due to gravity.
12.

What force is necessary to make a 36kg object accelerate at 2.4 m/s2? Neglect friction.

a)

86 lbs

b)

86 N

c)

15 lbs

d)

15 N

13.

What is the force transmitted along a rope or other connector called?

a)

net force

b)

gravity

c)

friction

d)

tension

14.
When an object is in circular motion it is constantly changing its velocity.
a)
True
b)
False
15.

A car is rounding a bend as shown in the diagram. Which arrow correctly shows the direction of the cars velocity?

a)

A

b)

B

c)

C

d)

D

16.

A car is rounding a curve as shown in the diagram. Which arrow correctly shows the direction of the centripetal force keeping the car in circular motion?

a)

A

b)

B

c)

C

d)

D

17.

What is the equation to calculate the centripetal force for an object?

a)

F = mT

b)

F = mv2/r

c)

F = mu mg

d)

F = mg

18.

The diagram shows an object traveling at a constant speed in a circular path. Which labeled arrow represents the centripetal force acting on the object?

a)

W

b)

Z

c)

X

d)

Y

19.

Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.

Use the equation: ac=v2/r

a)

2.4 m/s

b)

3.6 m/s

c)

3.9 m/s

d)

4.2 m/s

20.

Which force is known as the "center-fleeing" force?

a)

centripetal

b)

centrifugal

c)

inertia

d)

acceleration

21.

What is the SI unit of frequency?

a)

Joules

b)

Ohms

c)

Hertz

d)

Meters/second

22.

The amplitude of oscillation decreases as the driving frequency approaches the natural frequency.

a)

True

b)

False

23.

Which of the following is the law of levers?

a)

FiFo = riro

b)

Fi = Fo

c)

P=W/t

d)

Firi = Foro

24.

The pivot point of any lever is the

a)

fulcrum

b)

wedge

c)

mechanical advantage

d)

top

25.

This is defined as the turning back of a wave at an interface.

a)

Reflection

b)

Refraction

c)

Frequency

d)

Diffraction

26.

This is defined as the bending of a wave at an interface.

a)

Reflection

b)

Refraction

c)

Frequency

d)

Diffraction

27.

What must a medium be in order to transmit a wave?

a)

transparent

b)

elastic

c)

firm

d)

liquid

28.

A wave with a very high frequency has a very large wavelength.

a)

True

b)

False

29.

The "power" of a wave is the

a)

node

b)

frequency

c)

wavelength

d)

amplitude

30.

Who proposed the existence of electromagnetic waves?

a)

Isaac Newton

b)

James Clerk Maxwell

c)

Heinrich Hertz

d)

Max Planck

31.

Which of these is not part of the solar spectrum?

a)

red

b)

blue

c)

yellow

d)

indigo

32.

What is defined as the time rate of doing work?

a)

efficiency

b)

mechanical advantage

c)

net work

d)

power

33.

For a simple machine, the ratio of input distance to output distance is

a)

IMA

b)

AMA

c)

efficiency

d)

power

34.

The first accurate value of G was calculated by

a)

Newton

b)

Cavendish

c)

Kepler

d)

Galileo

35.

What is the frequency of a wave if its period is 3.2 s?

a)

3.2 Hz

b)

0.43 Hz

c)

0.34 Hz

d)

0.31 Hz

36.

The highest point of a wave is a ____. The lowest point of a wave is a ___.

a)

trough, crest

b)

crest, trough

c)

node, anti-node

d)

anti-node, node

37.

Transverse waves in simple harmonic motion have ______ properties.

a)

sinusoidal

b)

horizontal

c)

vertical

d)

compression

38.

Only certain materials, especially those containing aluminum, are magnetic.

a)

True

b)

False

39.

The law of reflection states that the angle of incidence is ___ the angle of reflection.

a)

greater than

b)

less than

c)

equal to

40.

Light is...

a)

a wave

b)

a particle

c)

neither

d)

both a wave and a particle

41.

Sound waves are an example of ____ waves.

a)

1D

b)

2D

c)

3D

d)

4D

42.

Fw=

a)

mg

b)

mr

c)

ra

d)

rg

43.

Waves along a string have a period of 0.040 s. What is their frequency?

a)

25 m/s

b)

25 Hz

c)

0.4 Hz

d)

0.4 m/s

44.

What is the frequency of waves with a wavelength of 0.35 m and a wave speed of 5.2 m/s?

a)

15 Hz

b)

14 Hz

c)

0.07 Hz

d)

1 Hz

45.

Hooke's Law states

a)

F = kx

b)

F = -kx

c)

k = Fx

d)

k = -Fx

46.

The period of a pendulum does not depend on its mass.

a)

True

b)

False

47.

A 45-kg child is swinging on a 7.0 m long rope that acts like a simple pendulum. What is the period of the oscillation? Use the equation T =  2πlg2\pi\sqrt{\frac{l}{g}}  

a)

5.3 s

b)

0.35 s

c)

1.1 s

d)

7.4 s

48.
Centripetal acceleration always points
a)
in the direction of the object's motion
b)
in the opposite direction of the object's motion
c)
towards the center of the circle
d)
towards the outside of the circle
49.

The drum of a washing machine rotates 1800 times in 3 minutes. What is the period?

a)

0.1 s

b)

0.2 s

c)

0.3 s

d)

0.5 s

50.

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

a)

5 m/s2

b)

17.63 m/s2

c)

10 m/s2

d)

8.81 m/s2

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