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Worksheets

NSTC

Total questions: 70

Worksheet time: 35mins

Name
Class
Date
1.
A distance vs. time graph shows an object's
a)
frame of reference
b)
speed
c)
acceleration
d)
favorite food
2.
A quantity that is ignorant of direction is referred to as a
a)
vector quantity
b)
scalar quantity
3.
An object can be moving for 10 seconds and still have zero displacement.
a)
True
b)
False
4.
The fastest trains are magnetically levitated above the rails to avoid friction (and are therefore called
MagLev trains...cool, huh?). The fastest trains travel about 250 km in a half an hour. What is their
average speed in km/hour?
a)
250 km/hr
b)
500 km/hr
c)
125 km/hr
5.
An object is NOT accelerating if it is moving
a)
in a circle
b)
at constant velocity 
c)
at increasing speed
d)
only as influenced by gravity
6.
A car slows down from +32 m/s to +8 m/s in 4 s. The acceleration is 
a)
6 m/s/s opposite the motion
b)
2m/s/s in the direction of motion
c)
8 m/s/s opposite the motion
7.

Match the graph to the description:

"The car is stopped."

a)
b)
c)
d)
8.

Match the graph to the description:

"The car is accelerating speeding up (positive acceleration)."

a)
b)
c)
d)
9.

Segment O-A: The bus is _________________. It's speed changes from 0m/s to 10 m/s in 5 seconds.

a)

accelerating

b)

decelerating

c)

constant speed

d)

at rest

10.
The more mass an object has, the faster it will fall.
a)
True
b)
False
11.
If you throw a baseball straight up, what is its velocity at the highest point?
a)
9.8 m/s2
b)
9.8 m/s
c)
0 m/s2
d)
0 m/s
12.
What is the horizontal acceleration of a projectile?
a)
0 m/s2
b)
9.8 m/s2
13.
What is the vertical acceleration of a projectile?
a)
0 m/s2
b)
9.8 m/s2
14.
If I throw a crayon straight up at 12m/s, how fast is its speed when i catch it at the same height?
a)
6 m/s
b)
12 m/s
c)
18 m/s
d)
24 m/s
15.
An object is shot from the ground (at 25 m/s) at 25 degrees and 65 degrees.  Which one has the greater range?   (assume no air resistance)
a)
25 degrees
b)
65 degrees
c)
same for both
16.
An object is shot from the ground (at 25 m/s) at 25 degrees and 65 degrees.  Which is in the air for longer? (assume no air resistance)
a)
25 degrees
b)
65 degrees
c)
same for both
17.
Two objects - one with mass m and the other with mass 2m - are released from rest at the same height. Which object hits the ground first?
a)
mass m
b)
mass 2m
c)
both objects hit the ground at the same time
d)
unable to determine with information given
18.

If a ball thrown straight up into the air takes 4 seconds to reach the top (peak), how long will it take to travel from the peak back to the original position?

a)

0s

b)

1s

c)

3s

d)

4s

19.

The fact that an apple and a watermelon, dropped simultaneously from the same height, would hit the ground at the same time indicates that

a)

you don't like apples or watermelons.

b)

greater masses have greater acceleration.

c)

lesser masses have greater acceleration.

d)

acceleration is independent of mass.

20.

If two projectiles are launched at two different heights, 2m and 10m, which one will reach the ground first?

a)

2m

b)

10m

c)

they both will hit the ground at the same time

21.

In the context of projectile motion, if the X-axis represents time and the Y axis represents the height, what do the X-intercepts represent?

a)

When the object is on the ground

b)

The maximum height of the object

c)

The object going underground

d)

The starting point of the object

22.
The height of an object thrown into the air can be modeled by the formula h(t) = -16t2 + 70t + 95, where h(t) is in feet after t seconds.
What is the height of the object after 5 seconds?
a)
95 feet
b)
45 feet
c)
70 feet
d)
171.56 feet
23.

Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?

a)
b)
c)
d)
24.
If you drop a banana, how fast is it going after 2 seconds?
a)
4.9m/s
b)
9.8m/s
c)
19.6m/s
d)
29.4m/s
25.
"For every action, there is an equal and opposite reaction."
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
26.
The tendency of an object to resist changes in its motion is...
a)
inertia
b)
force
c)
acceleration
d)
velocity
27.

Inertia depends on __________.

a)

Weight

b)

Velocity

c)

Mass

d)

Acceleration

28.

Newton's third law states.......

a)

For each action there is a larger reaction associated with it.

b)

None of these choices

c)

For each action there is an equal and opposite reaction.

d)

For each action there is a smaller reaction associated with it.

29.

my science chair is on wheels and moves easily across my floor as a result of this type of friction.

a)

Static

b)

Sliding

c)

Rolling

d)

Fluid

30.

My file cabinet stays in the corner of the room as a result of this type of friction.

a)

Static

b)

Rolling

c)

Sliding

d)

Fluid (Air Resistance)

31.

Nuclear sizes are expressed in a unit named

a)

Fermi

b)

Angstrom

c)

Newton

d)

Tesla

32.

Metals are good conductors of electricity because

a)

they contain free electrons

b)

the atoms are lightly packed

c)

they have high melting point

d)

All of the above

33.
WHEN AN ARCHER BENDS A BOW, WHAT TYPE OF ENERGY INCREASES IN THE BOW?
a)
GRAVITATIONAL
b)
ELASTIC
c)
KINETIC
d)
THERMAL
34.

Elastic potential energy is energy in an object that is compressed or __________.

a)

at rest

b)

stretched

c)

in equilibrium

35.

The equation for spring force is

a)

Fsp = mgh

b)

Fsp = 1/2kx2

c)

Fsp = Fd

d)

Fsp = -kx

36.

The spring constant of an object tells you?

a)

What type of spring you are dealing with

b)

How long the spring will stretch or compress

c)

It gives you a value on how easy or hard it is to change the objects length.

d)

A spring constant gives you a number which tells you what material the spring is made of.

37.
Which represents the acceleration of the ball?
a)
A
b)
B
c)
C
d)
D
38.
Harry Potter waved his .23 m wand with .069 Nm of torque. How much force did Harry apply to rotate his wand?
a)
.4
b)
.5
c)
.3
d)
.16
39.
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
40.
What is the direction of the velocity at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
41.
You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?
a)
Friction
b)
Centripetal Force
c)
Gravity
d)
Inertia
42.
The speed of light (c) =
a)
3 x 108 miles/hour
b)
3 x 108 meters/second
c)
3 x 108 kilometers/hour
d)
none of these
43.
The speed of light is constant in all frames of reference.
a)
True
b)
False
44.
A train stopped at a station is an inertial frame of reference.
a)
True
b)
False
45.

What happens to the force between two charged objects when you halve the distance between them?

a)

2X

b)

1/2X

c)

4X

d)

1/4X

46.

If one of the charges doubles, what happens to the force?

a)

it doubles

b)

it gets cut in half

c)

it quadruples

d)

it is cut by 1/4

47.
If the distance doubles, what happens to the force?
a)
Reduced by half
b)
Reduced by 1/4
c)
Stays the same
d)
Quadruples
48.
Which of the following statements is false about electric field lines
a)
electric field lines cannot cross
b)
electric field lines point away from positive charge
c)
electric field lines are always straight lines
d)
electric field lines show how a proton would move in an electric field
49.

Which of the following is a true statement about the electric field between the two plates?

a)

The field is attractive between the plates and uniform in strength

b)

The field is repulsive between the plates and uniform in strength

c)

The field is attractive between the plates and strongest near the positive

d)

The field is repulsive between the plates and strongest near the positive

50.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

a)

1/4 A

b)

144 A

c)

4 A

d)

0.4 A

51.

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

a)

1/3 ohms

b)

3 ohms

c)

27 ohms

d)

9 ohms

52.

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

a)

12 V

b)

21 V

c)

4/3 V

d)

3/4 V

53.

An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.

a)

60Ω

b)

120Ω

c)

180Ω

d)

240Ω

54.

An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.

a)

60Ω

b)

120Ω

c)

180Ω

d)

240Ω

55.

An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.

a)

60Ω

b)

120Ω

c)

180Ω

d)

240Ω

56.

A 12 Volt car battery pushes charge through the headlight circuit resistance of 10 ohms. How much current

is passing through the circuit?

a)

1A

b)

1.2A

c)

1.4A

d)

1.6A

57.

A kilowatt-hour is equivalent to

a)

1000 W.

b)

3600 J.

c)

3,600,000 J/s.

d)

3,600,000 J.

58.

If the resistance in a constant voltage circuit is doubled, the power dissipated by that circuit will

a)

increase by a factor of two.

b)

increase by a factor of four.

c)

decrease to one-half its original value.

d)

decrease to one-fourth its original value.

59.

If the voltage across a circuit of constant resistance is doubled, the power dissipated by that circuit will

a)

be four times as large.

b)

be two times as large.

c)

decrease to one-half the original power.

d)

decrease to one-fourth the original power.

60.

A 4000-Ω resistor is connected across a 220-V power source. What current will flow through the resistor?

a)

0.055 A

b)

1.8 A

c)

5.5 A

d)

18 A

61.

Which factor does not affect resistivity?

a)

Length

b)

Mass

c)

Cross-sectional area

d)

Temperature

62.

The unit of resistivity is

a)

Ω/m

b)

Ω/m2

c)

Ω.m

d)

Ω.m2

63.

A copper wire of length 2.5 m and cross-sectional area 2.4 × 10-7 m2 has a resistivity of 1.7x10-8Ωm. What is the resistance of the wire?

a)

1.6x10-15Ω

b)

1.0x10-14Ω

c)

0.18Ω

d)

5.6Ω

64.

Resistance of a material would be equal to resistivity when

a)

l = T

b)

A = l

c)

A = T

d)

l = R

65.

A wire of uniform diameter 0.28mm and a length of 1.50m has a resistance of 45Ω. It's resistivity is

a)

2.2 x 10-8Ωm

b)

36 Ωm

c)

1.8 x 10-6Ωm

d)

3.4 x 10-7Ωm

66.

A wire of uniform diameter 0.28mm and a length of 1.50m has a resistance of 45Ω. It's resistivity is

a)

2.2 x 10-8Ωm

b)

36 Ωm

c)

1.8 x 10-6Ωm

d)

3.4 x 10-7Ωm

67.

1.If you were in spaceship traveling at the speed close to the speed of light (with respect to the earth) you would notice that___________

a)

your pulse rate is different than normal

b)

your mass is different than normal

c)

some of your physical dimensions were smaller than the normal

d)

none of these effects occur

68.
The speed of light (c) =
a)
3 x 108 miles/hour
b)
3 x 108 meters/second
c)
3 x 108 kilometers/hour
d)
none of these
69.

The speed of light (c) =

a)

186,282 miles per second

b)

300,000,000 meters per second

c)

3.0 x 105 km/sec (kilometers per second)

d)

All answers are correct and equal to one another

70.

This expression 11−v2c2\frac{1}{\sqrt{1-\frac{v^2}{c^2}}}   represents

a)

time dilation

b)

the relativistic (Lorentz) factor

c)

length contraction

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