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PS Q4 Exam Review

Total questions: 86

Worksheet time: 3hrs 44mins

Name
Class
Date
1.

A wheelchair racer completes a 100 meter course in 20 seconds. What is his speed?

a)

10 m/s

b)

5 m/s

c)

2 m/s

d)

0 m/s

2.
In a distance time graph, the steeper the line the...
a)
greater the speed
b)
slower the speed
c)
speed has reached zero
d)
speed has not changed
3.
Speed in a specific direction is called
a)
speed
b)
acceleration
c)
position
d)
velocity
4.
True or False
It is possible for two objects to have the same speed but different velocities
a)
true
b)
false
5.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
6.
Which runner won the race?
a)
Albert
b)
Bob
c)
Charlie
7.

A car driving at 50 miles per hour drives for 2 hours. What distance did it cover?

a)

50 miles

b)

25 miles

c)

100 miles

d)

75 miles

8.

A truck driving at 60 miles per hour travels 150 miles. How long is the trip?

a)

9000 hours

b)

0.4 hours

c)

210 hours

d)

2.5 hours

9.
On a distance-versus-time graph, a straight line ALWAYS indicates that an object’s speed is _____.
a)
constant
b)
zero
c)
increasing
d)
decreasing
10.

The graph represents

a)

no motion

b)

positive velocity

c)

Acceleration

d)

negative velocity

11.
What is happening at D?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
12.
What is happening at E?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Steady speed; returning to start position
13.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
14.
How far is the person from the starting point after 3 seconds?
a)
0 m
b)
2 m 
c)
3 m
d)
6 m 
15.
When a car goes around a corner at 20 mph, why do we say it  accelerates?
a)
The car is accelerating because of the velocity is constant
b)
The car accelerates because it's going 20 mph
c)
Cars always accelerate when they are in motion
d)
The car is accelerating because it's changing direction
16.
Acceleration only takes place when things speed up. 
a)
True
b)
False
17.
A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?
a)
24 m/s2
b)
18 m/s2
c)
16 m/s2
d)
16 m/s
18.
Acceleration can be classified as _______________
a)
Speeding up
b)
Slowing Down
c)
Changing directions
d)
All of the above
19.
What is the force that causes objects to fall to Earth?
a)
Air resistance
b)
Gravity
c)
Water resistance
d)
Pressure
20.
When two objects rub together, what force do they produce
a)
Gravity
b)
Air resistance
c)
Friction
d)
Water resistance
21.

What type of force is this man using to push his grocery cart?

a)

Normal Force

b)

Gravity

c)

Air Resistance

d)

Applied Force

22.

Is this an example of a balanced or unbalanced force?

a)

Balanced force

b)

Unbalanced force

c)

I don't know

23.
If an object is stationary (not moving) the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
24.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
d)
cannot be determined
25.
a)
1st
b)
2nd
c)
3rd
d)
law of motion
26.
What law is best described by inertia?
a)
1st
b)
2nd
c)
3rd
d)
law of conservation of mass
27.
Equal and Opposite
a)
1st
b)
2nd
c)
3rd
d)
speed 
28.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
29.
A 20 kg bike accelerates at 10 m/s2.  what was the force
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
30.
the tendency of an object to resist a change in its motion
a)
acceleration
b)
inertia
c)
mass
d)
frame of reference
31.
Objects with greater _________ also have greater inertia.
a)
speed
b)
mass
c)
temperature
d)
friction
32.

this picture illustrates which of Newton's Laws?

a)

1st

b)

2nd

c)

3rd

33.

F = MxA

a)

1st law

b)

2nd law

c)

3rd law

34.
Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more mass and requires more force to accelerate.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
35.
A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.
a)
The Law of Inertia (1st law)
b)
The Law of Acceleration (2nd law)
c)
The Law of Conservation of Momentum
d)
Action Reaction Law (3rd law)
36.
When all the forces on an object are equal and opposite, & the net force is zero, that's...
a)
balanced forces
b)
unbalanced forces
c)
terminal velocity
d)
reaction forces
37.

Leanna decided to rearrange her bedroom by moving her dresser to the opposite wall. She tried pushing it, but found that the dresser would not move. What force was Leanne NOT able to overcome?

a)

normal force

b)

gravitational force

c)

tension force

d)

frictional force

38.

this type of force prevents objects from falling through a surface?

a)

gravity

b)

normal

c)

applied

d)

friction

39.

Which of the following is the best example of work being done.

a)

doing homework

b)

lifting a box

c)

sitting in a chair

d)

holding a box

40.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
41.
How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
a)
15 J
b)
45 J
c)
0 J
d)
5 J
42.
The amount of work done in a certain amount of time is known as 
a)
work
b)
effort force
c)
resistance force 
d)
power
43.
How much power is the  tractor that drags a plow with a force of 500 N a distance of 10 meters in 20 seconds?
a)
250 Watts
b)
250 Joules
c)
100,000 Watts
d)
100,000 Joules
44.

Work done = Force x _________

a)

distance

b)

acceleration

c)

velocity

d)

speed

45.
If 68 W of power is produced in 18 seconds, how much work is done?
a)
1,224 J
b)
0.264 J
c)
3.77 J
d)
12.24 J
46.
How much time is needed to produce 720 Joules of work if 90 watts of power is used? 
a)
0.125 s
b)
8 s
c)
64800 s
d)
80 s
47.
If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?
a)
272 m
b)
17 m
c)
4.05 m
d)
272 cm 
48.
True or false: when the distance an object moves is zero the work done on the object is also zero.  
a)
True
b)
False
49.
Work is done when a weightlifter holds a barbell still above his head.
a)
True
b)
False
50.

You push against the back of your friends car that is stuck. You push and be become very tired, but the car does not move. Did you do work?

a)

Yes, work was done

b)

No, work wasn't done

51.

If you increase your work and decrease your time, you will have

a)

more power

b)

less power

c)

same amount of power

d)

power rating can not be determined

52.

What is the unit for time?

a)

seconds

b)

meters

c)

kilograms

d)

meters/sec

53.

What is the equation for power?

a)

Work ÷ time

b)

Force x distance

c)

work ÷ force

d)

distance x time

54.

What is the metric unit for Distance?

a)

Newtons

b)

Joules

c)

Watts

d)

Meters

55.

What is the unit of Force?

a)

Meters

b)

Joules

c)

Newtons

d)

Watts

56.

What is the unit of Power?

a)

Newtons

b)

Watts

c)

Meters

d)

Joules

57.

A person performs 1,500,000 J of work while walking. The person has a weight of 750 N. How far did the person walk?

a)

20 m

b)

200 m

c)

2000 m

d)

20,000 m

58.

in order for work to be done, an object must change its...

a)

color

b)

position

c)

attitude

d)

size

59.

Linda picks up a bag and then walks forward. when is she doing work?

a)

picking up the bag only

b)

holding the bag while walking forward

c)

neither

60.

what is the unit for work?

a)

newtons

b)

seconds

c)

joules

d)

watts

61.

this type of simple machine is formed from two inclined planes put together (ex: knife)

a)

inclined plane

b)

wedge

c)

ramp

d)

pulley

62.

All of these are examples of a wheel and axle except:

a)

pizza cutter

b)

doorknob

c)

windmill

d)

see-saw

63.

A simple machine usually used to raise a flag is a (an)

a)

inclined plane

b)

pulley

c)

lever

d)

wheel and axle

64.
________________ is done whenever a force moves an object a distance
a)
load
b)
friction
c)
force
d)
work
65.

a flat board lifted at one end- A ramp is an example

a)

inclined plane

b)

pulley

c)

wheel & axle

d)

lever

66.

A simple machine that splits an object apart is a

a)

inclined plane

b)

pulley

c)

wedge

d)

lever

67.

The fixed point on a lever

a)

force

b)

load

c)

work

d)

fulcrum

68.
Which type simple machine would the base of a light bulb be?
a)
screw
b)
wedge
c)
wheel and axle
d)
pulley
69.

An inclined plane wrapped around a post forms this simple machine

a)

lever

b)

pulley

c)

screw

d)

wedge

70.
A simple machine that consists a rigid bar that pivot about a fixed point
a)
lever
b)
pulley
c)
wheel and axle
d)
fulcrum 
71.

Which is NOT a type of simple machine?

a)

spring

b)

screw

c)

pulley

d)

wedge

72.

Which of the following does a simple machine do?

a)

apply less force over a longer distance

b)

change the amount of force

c)

change the direction of the applied force

d)

all of the above

73.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
74.

In a second class lever like a wheelbarrow, the ______ is in the middle.

a)

force

b)

Fulcrum

c)

Load

75.

In third class levers like tweezers, the ______ is in the middle.

a)

force

b)

Fulcrum

c)

Load

76.

In a first class lever like a see-saw, the _____ is in the middle.

a)

force

b)

Fulcrum

c)

Load

77.

Simple machines allow us to do LESS work.

a)

TRUE

b)

FALSE

78.

Simple machines make the work we have to do easier, but it is still the SAME amount of work.

a)

TRUE

b)

FALSE

79.
What two simple machines make up scissors?
a)
wheel and axle
b)
lever and wedge
c)
wedge and inclined plans
d)
inclined plane and lever
80.

What is the MA of an inclined plane if you lift a box 2 meters off the ground using a ramp that is 4 meters long? (MA=ramp length/height)

a)

2

b)

3

c)

4

81.

this simple machine is made of a rope or cable wrapped around a grooved wheel

a)

inclined plane

b)

wheel & axle

c)

pulley

d)

lever

82.

what two simple machines are made from inclined planes?

a)

lever & wedge

b)

pulley & screw

c)

wedge & screw

d)

wheel & axle and screw

83.

True or False. The formula for work is Work = Force x Distance (W= F x D).

a)

True

b)

False

84.

Which ramp will require the least amount of force?

a)

A

b)

B

c)

C

d)

D

85.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
screw
d)
wheel and axle
86.
The door knob and rod make up which simple machine?
a)
lever
b)
pulley
c)
screw
d)
wheel and axle

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