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Motion and force review

Total questions: 44

Worksheet time: 1hrs 4mins

Name
Class
Date
1.
In the distance vs. time graph, what type of motion does the line represent?
a)
No motion
b)
Constant velocity
c)
Acceleration
d)
Deceleration
2.
In the distance vs. time graph, what type of motion does the line represent? 
a)
Speed
b)
Velocity
c)
Acceleration
d)
Deceleration
3.
Which runner had a head start?
a)
A
b)
B
c)
C
d)
None of them
4.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Deacceleration
d)
Not moving
5.
What is happening in this graph from point B to C?
a)
The object is going down a hill.
b)
The object is returning to its starting location.
c)
The object is slowing down.
d)
The object is staying still.
6.
What is happening in this graph from point A to B?
a)
The object is accelerating.
b)
The object is not moving.
c)
The object is decelerating.
d)
The object is moving at a constant speed.
7.
What is this graph showing?
a)
Constant Speed
b)
Acceleration (speeding up)
c)
Deceleration (slowing down)
d)
No motion
8.
During which interval is the object traveling at a constant velocity?
a)
B to C
b)
D to E
c)
F to G
d)
it traveling at a constant velocity during all of the intervals shown.
9.
What is this objects speed at 2 s?
a)
5 m/s
b)
5 s/m
c)
20 m/s
d)
20 s/m
10.
How long did it take this object to travel back to its reference/starting point?
a)
20 s
b)
30 s
c)
60 s
d)
100 s
11.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
12.
How far has the red runner gone in 3 seconds?
a)
40 yards
b)
10 yards
c)
30 yards
d)
20 yards
13.
A change in velocity over time is known as:
a)
acceleration
b)
constant speed
c)
average speed
d)
displacement
14.

A dog runs on the sidewalk 9 mi/hr.

a)

Speed

b)

Acceleration

c)

Velocity

15.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
16.
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
17.

Objects that are changing their speed or their direction

a)

force

b)

energy

c)

acceleration

d)

friction

18.

two or more forces act upon an object in such a way as to exactly counteract each other

a)

friction

b)

balanced force

c)

unbalanced force

d)

force

19.

a force that causes a change in motion of an object

a)

friction

b)

balanced force

c)

unbalanced force

d)

force

20.

A _____ is a pull or a push.

a)

force

b)

friction

c)

gravity

d)

speed

21.

__________________ is the force that makes an object slow down.

a)

speed

b)

gravity

c)

friction

d)

pulley

22.

Two girls are pulling on opposite ends of a thick rope. Both girls pull on the rope with the same force but in opposite directions. If both girls continue to pull with the same force, what will most likely happen?

a)

One girl will pull the other toward her.

b)

Both girls will stay in the same place.

c)

Gravity will cause the rope to sag.

d)

The rope will break.

23.

What is speed?

a)

Speed is how far something travels in one hour.

b)

Speed is how fast it takes something to travel a set distance

c)

Speed is the distance something travels in a set amount of time.

d)

Speed is the change in velocity of something.

24.

An airplane travels at 50 meters in 2 seconds. What is its average speed?

a)

25 miles per hour

b)

100 miles per hour

c)

25 meters per second

d)

100 meters per second

25.

How does Newton's third law explain how a rocket takes off?

a)

The rocket's acceleration is positive, while the gasses acceleration is negative, but the direct is the same. The motion, therefore, are both "equal and opposite".

b)

The hot gasses move in one direction, while the rocket moves in the opposite direction, but with equal force.

c)

The rocket is at rest until ignition.

d)

The hot gasses cause global warming.

26.
As mass increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
27.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
28.
What is the net force?
a)
11 N left
b)
11 N right
c)
3 N left
d)
3 N right
29.
What is the net force?
a)
3 N left
b)
3 N right
c)
7 N left
d)
7 N right
30.

Lizbeth sees a guy at the dance that she has a crush on and decides to chase him and ask him out on a date.. Find her speed if she runs 80 m in 5 s.

a)

400m/s

b)

16m/s

c)

15m/s

d)

16 m

31.

A dog runs 100 meters in 4 seconds. A lion runs 250 meters in 10 seconds. What is the difference in their speeds?

a)

A. The dog is 100 m/s faster

b)

B. The lion 102 m/s slower

c)

D. The dog is 45 m/s faster

d)

C. Their speeds are equal

32.

A car travels at a constant speed of 70 km/hr for 15 minutes. The car decreases its speed from 70 to 40 km/hr over the next two minutes and then continues to travel at a constant speed of 40 km/hr for the next 5 minutes.

a)
b)
c)
d)
33.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
34.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
35.
How much work is produced when 350 N is used to move a car 5 m (W=Fd)?
a)
70 J
b)
1750 J
c)
355 J
d)
175 J
36.

Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever (MA=Output Force/Input Force)?

a)

1

b)

10

c)

100

d)

1000

37.
if a load of a lever is 100 newtons and the force you apply is 20 newtons, what is your mechanical advantage?
a)
120 N
b)
5 N
c)
2000 N
d)
80 N
38.
The amount by which a machine multiplies input force is known as the 
a)
work.
b)
power.
c)
output force.
d)
mechanical advantage.
39.

What is a machine?

a)

an object that has Artificial Intelligence.

b)

an object that is designed to take over the earth in 2050.

c)

a device that changes force by reducing it over a larger distance.

d)

a mechanism that is used to decrease the amount of work done.

40.

What is resistance (output) force?

a)

the force required by a machine in order to accomplish work (the force you put on the machine)

b)

The force that is exerted by a machine

c)

the force the machine exerts on a object

d)

the output work times the input distance

41.

What is effort (input) distance?

a)

the force required by a machine in order to accomplish work (the force you put on the machine)

b)

the force which an effort force must overcome in order to do work on an object via a simple machine.

c)

the distance an input force acts through

d)

the output work times the input distance

42.
Lamar Gant, U.S. powerlifting star, became the first man to deadlift five times his own body weight in 1985. Deadlifting involves raising a loaded barbell from the floor to a position above the head with outstretched arms. Determine the work done by Lamar in deadlifting 300 kg to a height of 0.90 m above the ground (W=Fd).
a)
270 J
b)
2646 J
c)
333 J
d)
3.00X10-3 J
43.
Work output of a large machine in a factory is 89,000 Joules, and its input is 102,000 joules. Work output of a similar machine is 92,000 joules, and its work input is 104,000 joules. Which machine has greater efficiency?
a)
The first machine
b)
The second machine
c)
Not enough information provided
44.
a)

3

b)

5

c)

7

d)

9

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