MOTION & FORCES

Mrs. Laubscher

THE OVERALL FORCE ON AN OBJECT AFTER ALL THE FORCES ARE ADDED TOGETHER IS CALLED THE ____________________ FORCE.

Inerti

a

Unbalance

d

Grav

itational

Net

25% 25%25%25%1. Inertia2. Unbalanced3. Gravitational4. Net

WHICH ONE OF THE FOLLOWING CANNOT BE TRUE FOR A CAR THAT IS ACCELERATING?

It is

moving w

ith in

creas..

.

It is

moving w

ith a

faste...

It has a

high co

nstant v

e...

It is

changin

g dire

ction

25% 25%25%25%

1. It is moving with increasing speed

2. It is moving with a faster speed than it was before

3. It has a high constant velocity

4. It is changing direction

AS AN OBJECT FALLS FREELY, ITS

Speed in

crease

s

Acceleration in

creas

es

Both in

crease

None of t

hese

25% 25%25%25%1. Speed increases2. Acceleration

increases3. Both increase4. None of these

THE GRAVITATIONAL PULL IS GREATER BETWEEN TWO OBJECTS THAT

25% 25%25%25%1. Have rougher surfaces

2. Are farther apart3. Have greater

masses4. Are moving at a

greater speed.

MASS IS . . .

Diff

erent o

n the m

oon t...

A measu

re of g

ravit

ation..

Measu

red in newto

ns

A measu

re of t

he amoun...

25% 25%25%25%1. Different on the moon than on Earth

2. A measure of gravitational force

3. Measured in newtons4. A measure of the

amount of matter

WHEN A MOVER PUTS FURNITURE ON A DOLLY WITH WHEELS, WHICH TYPE OF FRICTION IS THE MOVER USING TO MAKE HIS JOB EASIER?

Rolling f

riction

Static f

riction

Sliding fr

iction

Fluid fr

iction

25% 25%25%25%1. Rolling friction2. Static friction3. Sliding friction4. Fluid friction

THE AVERAGE SPEED OF A HORSE WHICH GALLOPS 10 KILOMETERS IN 30 MINUTES IS

3 km/hr

6 km/hr

10 km/h

r

20 km/h

r

25% 25%25%25%1. 3 km/hr2. 6 km/hr3. 10 km/hr4. 20 km/hr

TEN SECONDS AFTER STARTING FROM REST A FREE FALLING OBJECT WILL HAVE A SPEED OF ABOUT . . .

10 m/s

50 m/s

100 m/s

More

than 150 m

/s

25% 25%25%25%1. 10 m/s2. 50 m/s3. 100 m/s4. More than 150 m/s

WHAT IS THE NET FORCE AN OBJECT WILL HAVE WHEN YOU COMBINE A FORCE OF 14 N NORTH WITH A FORCE OF 6 N SOUTH?

8 N N

orth

20 N So

uth

20 N N

orth

8 N So

uth

25% 25%25%25%1. 8 N North2. 20 N South3. 20 N North4. 8 N South

MARS IS LESS MASSIVE THAN EARTH. IF YOU COULD TRAVEL TO MARS WHICH WOULD BE TRUE?

Your mass

would go do..

Your weight w

ould go ...

Both your m

ass and w

ei...

Your weight w

ould go u...

25% 25%25%25%1. Your mass would go down but your weight would stay the same.

2. Your weight would go down but your mass would stay the same.

3. Both your mass and weight would change.

4. Your weight would go up but your mass would stay the same.

TO STOP THE MOTION OF A BASEBALL, YOU MUST APPLY ___ TO THE BALL

An unbalanced fo

rce In

ertia

A balance

d force

A zero

net force

25% 25%25%25%1. An unbalanced force2. Inertia3. A balanced force4. A zero net force

IF A IS A DISTANCE TIME GRAPH, WHAT IS THE CAR DOING?

Going at a

consta

nt speed

Accelerating at

a const.

..

Not m

oving

Dece

lerating

25% 25%25%25%1. Going at a constant speed2. Accelerating at a constant

speed3. Not moving4. Decelerating

IF D IS A VELOCITY VS. TIME GRAPH, WHAT IS THE CAR DOING?

Going at a

consta

nt speed

Grad

ually acc

elerating

Grad

ually dece

lerating

Going at a

consta

nt acce

...

25% 25%25%25%

1. Going at a constant speed

2. Gradually accelerating3. Gradually decelerating4. Going at a constant

acceleration

IF E IS A DISTANCE VS. TIME GRAPH WHAT IS THE CAR DOING?

Going fr

om far a

way to ...

Dece

lerating

Going back

wards

Accelerating to

wards t

he...

25% 25%25%25%1. Going from far away to

closer to home2. Decelerating3. Going backwards4. Accelerating towards

the start

WHICH OF THE FOLLOWING MOVING AT THE SAME SPEED, WOULD HAVE THE LEAST MOMENTUM?

A spider

A frog

A cat

A bear

25% 25%25%25%

1. A spider2. A frog3. A cat4. A bear

IF THERE IS NO FRICTION, WHEN TWO OBJECTS OF THE SAME MASS COLLIDE AND DO NOT STICK TOGETHER THE OBJECTS ____ VELOCITIES

Add

Subtra

ct

Multi

ply

Divi

de

Average

Switc

h

17% 17% 17%17%17%17%1. Add2. Subtract3. Multiply4. Divide5. Average6. Switch

TO INCREASE ACCELERATION OF AN OBJECT YOU CAN

Incre

ase th

e force

and i...

Decre

ase th

e force

and ...

Incre

ase th

e force

and i...

Incre

ase th

e force

and d...

25% 25%25%25%1. Increase the force and increase the mass

2. Decrease the force and decrease the speed

3. Increase the force and increase the speed

4. Increase the force and decrease the mass

WHICH OF THE FOLLOWING IS UNTRUE ABOUT INERTIA?

It’s a

lso N

ewton’s

first la

w

It is

cause

d by applying..

.

It is

a resis

tance

to m

otion

It sa

ys that a

n object in...

25% 25%25%25%1. It’s also Newton’s first law

2. It is caused by applying an unbalanced non-zero net force.

3. It is a resistance to motion

4. It says that an object in motion tends to stay in motion at a constant velocity

IF EARTH’S GRAVITY DISAPPEARED, OUR MOON WOULD

Continue to orb

it the Earth

Orb

it the su

n

Fly o

ff in a

straigh

t line

Crash

into

Earth

25% 25%25%25%1. Continue to orbit the

Earth2. Orbit the sun3. Fly off in a straight line4. Crash into Earth

THE FORCE THAT CAUSES AN OBJECT TO MOVE IN A CIRCLE IS

Centripetal fo

rce

Centrifu

gal fo

rce

Terminal v

elocity

Free fa

ll

25% 25%25%25%1. Centripetal force2. Centrifugal force3. Terminal velocity4. Free fall

THE FORMULA FOR ____ IS MASS X VELOCITY.

Acceleration

Momentu

m Fo

rce

Speed

25% 25%25%25%1. Acceleration2. Momentum3. Force4. Speed

WHEN TWO OBJECTS COLLIDE AND STICK TOGETHER, TO FIND THE VELOCITY OF BOTH YOU NEED TO CONSIDER ALL OF THE FOLLOWING EXCEPT?

Law of c

onserv

ation of...

The amount of m

ass of ..

.

The total

amount of m

...

The force

of how hard

th...

25% 25%25%25%1. Law of conservation of momentum

2. The amount of mass of both objects added together

3. The total amount of momentum

4. The force of how hard the first object hit the second object

THE REASON THAT A BOWLING BALL CAN HIT DOWN MORE PINS THAN A TENNIS BALL IS . . .

You can th

row th

e tenni...

Newto

n’s Fir

st La

w

Newto

n’s Seco

nd Law

Newto

n’s Third

Law

The Law of C

onserv

ation...

Centripetal F

orce

The Law of U

niversal G

ra...

14% 14% 14% 14%14%14%14%1. You can throw the tennis ball faster.

2. Newton’s First Law3. Newton’s Second Law4. Newton’s Third Law5. The Law of Conservation of

Momentum6. Centripetal Force7. The Law of Universal

Gravitation

WHEN YOU PADDLE A CANOE, THE CANOE GOES FORWARD BECAUSE OF . . .

Paddling c

reate

s a bala.

..

Newto

n’s Fir

st La

w

Newto

n’s Seco

nd Law

Newto

n’s Third

Law

The Law of C

onserv

ation...

Centripetal F

orce

The Law of U

niversal G

ra...

14% 14% 14% 14%14%14%14%

1. Paddling creates a balanced force

2. Newton’s First Law3. Newton’s Second Law4. Newton’s Third Law5. The Law of Conservation of

Momentum6. Centripetal Force7. The Law of Universal

Gravitation

THE REASON WHY EARTH ORBITS THE SUN IS

Newto

n’s Fir

st La

w

Newto

n’s Seco

nd Law

Newto

n’s Third

Law

The Law of C

onserv

ation...

Centripetal F

orce

Earth

has a lo

t of g

ravit

y

17% 17% 17%17%17%17%1. Newton’s First Law2. Newton’s Second Law 3. Newton’s Third Law4. The Law of Conservation of

Momentum5. Centripetal Force6. Earth has a lot of gravity

THE REASONS WHY YOU NEED TO WEAR A SEATBELT IS . . .

Law of U

niversal G

ravit..

.

Newto

n’s Fir

st La

w

F = m

x a

F = m

/a

Newto

n’s Third

Law

Law of C

onserva

tion of...

Elasti

c & in

elastic c

ollisions

14% 14% 14% 14%14%14%14%1. Law of Universal

Gravitation2. Newton’s First Law3. F = m x a4. F = m/a5. Newton’s Third Law6. Law of Conservation of

Momentum7. Elastic & inelastic

collisions

THE REASON WHY WE REACH TERMINAL VELOCITY WHEN FALLING IS BECAUSE OF

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r answ

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