Forces and MotionForces and Motion

SOL ReviewSOL Review

John goes over the top of a hill at a speed of 4m/s while on his bicycle. Four seconds later, his speed is 24m/s. What is John's acceleration?

1 2 3 4 5 2

0 m

/s s

q.

16

m/s

sq.

6 m

/s s

q.

5 m

/s s

q.

25% 25%25%25%

A. 20 m/s sq.

B. 16 m/s sq.

C. 6 m/s sq.

D. 5 m/s sq.

Forces that are equal in size and opposite in direction are:

1 2 3 4 5

bal

ance

d forc

es

fric

tional

forc

es

gra

vita

tional

forc

es

net

forc

es

25% 25%25%25%A. balanced forces

B. frictional forces

C. gravitational forces

D. net forces

Newton's first law of motion states that an object stays at rest unless a ____ acts on it.

1 2 3 4 5

bal

ance

d forc

e

fric

tional

forc

e

gra

vita

tional

forc

e

net

forc

e

25% 25%25%25%A. balanced force

B. frictional force

C. gravitational force

D. net force

The rate of change of speed and/or the change in direction is called:

1 2 3 4 5

acc

eler

atio

n

ave

rage

spee

d

gra

vity

vel

ocity

25% 25%25%25%A. acceleration

B. average speed

C. gravity

D. velocity

The relationship among mass, force, and acceleration is explained by:

1 2 3 4 5 c

onserv

atio

n of m

om...

New

ton's

firs

t law

of .

..

New

ton's

sec

ond la

w ..

New

ton's

third

law o

...

25% 25%25%25%A. conservation of momentum

B. Newton's first law of motion

C. Newton's second law of motion

D. Newton's third law of motion

Which of the following objects has the greatest inertia?

1 2 3 4 5

bas

ebal

l

bowlin

g bal

l

pen

cil

tabl

e-te

nnis b

all

25% 25%25%25%A. baseball

B. bowling ball

C. pencil

D. table-tennis ball

As you climb a mountain, you get farther from the center of the earth.  Your weight will:

1 2 3 4 5

dec

reas

e

incr

ease

rem

ain th

e sa

me

33% 33%33%A. decrease

B. increase

C. remain the same

A person, in a head-on car collision, who is not wearing a seat belt, continues to move forward at the original speed of the car because of:

1 2 3 4 5 fr

ictio

n

iner

tia

gra

vity

wei

ght

25% 25%25%25%A. friction

B. inertia

C. gravity

D. weight

The statement "for every action there is an equal and opposite reaction" is:

1 2 3 4 5

25% 25%25%25%A. the law of conservation

of momentum

B. Newton's first law of motion

C. Newton's second law of motion

D. Newton's third law of motion

The acceleration due to gravity is:

1 2 3 4 5 9

8 m

/s s

q.

9.8

m/s

sq.

9.8

m/s

0.9

8 m

/s

25% 25%25%25%A. 98 m/s sq.

B. 9.8 m/s sq.

C. 9.8 m/s

D. 0.98 m/s

A 300N force is used to move an object 2M.  The amount of work equals:

1 2 3 4 5 1

50 N

m

300

Nm

302

Nm

600

Nm

25% 25%25%25%A. 150 Nm

B. 300 Nm

C. 302 Nm

D. 600 Nm

Two simple machines that are part of a bicycle are:

1 2 3 4 5 A

whee

l an a

xle

and ..

.

An in

clin

ed p

lane

and.

.

An in

clin

ed p

lane

an...

A s

crew

and a

n incl

i...

25% 25%25%25%A. A wheel an axle and a screw

B. An inclined plane and a lever

C. An inclined plane and a wedge

D. A screw and an inclined plane