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Physics Unit One Review

Total questions: 99

Worksheet time: 55mins

Name
Class
Date
1.

motion is

a)

moving from one place to another

b)

staying in one place

c)

the total amount traveled

d)

distance from a reference point

2.

this is the formula for:

a)

speed

b)

displacement

c)

force

d)

velocity

3.

distance is

a)

the total amount traveled

b)

relative motion

c)

distance over time

d)

distance from reference point.

4.

displacement is

a)

distance from the reference point

b)

distance from the center of an object

c)

velocity over time

d)

total force on an object

5.

velocity is

a)

the rate displacement changes over time

b)

the rate distance changes over time

c)

the rate acceleration changes over time

d)

always positive

6.

all motion is relative and depends on a _______________ ______.

a)

reference frame

b)

motion map

c)

free body diagram

7.

which type of graph shows the relationship of position over time for a moving object?

a)

velocity-time graph

b)

heat curve

c)

position-time graph

d)

parabola

8.

the slope of a position-time graph represents the object's ....

a)

velocity

b)

displacement

c)

speed

d)

acceleration

9.

the picture shows examples of what kind of diagram?

a)

motion map

b)

free body diagram

c)

energy diagram

d)

position-time graph

10.

select three things motion maps represent for an object:

a)

position

b)

velocity

c)

acceleration

d)

speed

e)

force

11.

what is the length of the intervals in a motion map?

a)

1 second

b)

3 seconds

c)

0.5 seconds

d)

10 seconds

12.

when the slope changes from positive to negative or from negative to positive on a position-time graph, this indicates

a)

change in direction

b)

change in velocity

c)

change in speed

d)

change in time

13.

the position from which an event is observed

a)

reference frame

b)

reference point

c)

displacement frame

d)

motion map

14.

Moving towards the reference frame means the motion is

a)

positive

b)

negative

c)

balanced

15.

moving away from the reference frame means the motion is

a)

negative

b)

positive

c)

gone

d)

unbalanced

16.

Felipe is riding his skateboard toward Lilah at 15 km/h. He throws a football to Lilah. The football is thrown at 8 km/h. How fast is the football traveling when it reaches Lilah?

a)

23 km/h

b)

7 km/h

c)

15 km/h

d)

8 km/h

17.

speed is a _______ quantity, meaning it is described by magnitude alone

a)

scalar

b)

vector

c)

factor

d)

random

18.

average speed is

a)

total distance over total time

b)

distance over time

c)

total displacement over time

d)

displacement over total time

19.

this is the formula for:

a)

average velocity

b)

average acceleration

c)

total velocity

20.

Slope and velocity are

a)

directly proportional

b)

inversely proportional

21.

any point on the line of a position-time graph will give the

a)

instantaneous velocity

b)

average velocity

c)

total velocity

d)

average speed

22.

a negative slope on a position-time graph indicates an object moving _______ the origin

a)

toward

b)

away

23.

a positive slope on a position-time graph indicates an object moving _______ from the origin

a)

away

b)

towards

24.

a ___________ line on a position-time graph means that the object is not moving

a)

horizontal

b)

vertical

c)

sideways

d)

curved

25.

The longer the arrow on a motion map, the greater the...

a)

velocity

b)

acceleration

c)

position

26.

the diagram shows a motion map for a train. which statement is supported by the motion map?

a)

train traveled south then north

b)

train moved at a greater velocity of 75 mph north

c)

the train stopped for 3 seconds

d)

the train had a greater velocity when it moved away from the origin

27.

x on a motion map represents what?

a)

reference point

b)

total displacement

c)

speed

d)

velocity

28.

positive acceleration occurs in two scenarios:

a)

object speeds up in positive direction

b)

object speeds up in negative direction

c)

object slows down in the negative direction

d)

object slows down in positive direction

29.

acceleration is

a)

rate at which velocity changes over time

b)

rate at which distance changes over time

c)

average distance over time

30.

this is the formula for:

a)

acceleration

b)

velocity

c)

displacement

d)

speed

31.

acceleration of an object depends on

a)

initial velocity

b)

final velocity

c)

time

d)

speed

e)

displacement

32.

the picture shows

a)

formulas derived from constant acceleration

b)

random nonsense

c)

formulas derived from the pythagorean theorem

33.

The slope of the line on a velocity-time graph represents...

a)

acceleration

b)

velocity

c)

position

d)

speed

34.

select the answers that accurately describe a velocity-time graph:

a)

line with positive slope represents positve acceleration

b)

line with negative slope represents negative acceleration

c)

line with positve slope represents negative acceleration

d)

line with negative slope represents positive acceleration

e)

horizontal line has no slope, constant velocity, and no acceleration

35.

to find displacement from a velocity-time graph, you find...

a)

area under the curve

b)

change in x

c)

area above the curve

d)

total velocity

36.

on motion maps, acceleration is shown with

a)

smaller arrows on top of velocity arrows

b)

acceleration is not shown

c)

smaller arrows below velocity arrows

37.

For motion maps that illustrate accelerated motion, what does a new level indicate?

a)

change in acceleration or direction

b)

constant acceleration and direction

c)

increased velocity

d)

decreased velocity

38.

An object moving north with an initial velocity of 14 m/s accelerates 5 m/s^2 for 20 seconds. What is the final velocity of the object?

a)

39 m/s

b)

90 m/s

c)

114 m/s

d)

414 m/s

39.

How is constant velocity indicated on a motion map?

a)

vectors that increase in length

b)

vectors that are the same length

c)

dots that increase in size

d)

dots that are the same length

40.

an object moving at constant velocity will always have

a)

zero acceleration

b)

positive acceleration

c)

negative acceleration

41.

match term with this definition: an action that has the ability to change an object's state of motion

a)

force

b)

work

c)

acceleration

d)

velocity

42.

forces are measured in...

a)

newtons

b)

joules

c)

meters per second

d)

ampoules

43.

1 kg * (m/s^2) is equal to

a)

1 newton

b)

1 joule

c)

1 pascal

d)

1 atm

44.

force applied to an object by a person or another object

a)

push or pull

b)

normal

c)

net

d)

tension

45.

force that is always directed toward the center of the Earth. attractive force between all matter in the universe.

a)

gravitational force (Fg)

b)

push or pull (Fp)

c)

normal force (FN)

d)

tension (FT)

46.

support force that a surface exerts on an object, always at 90-degree angle to the surface

a)

normal force (Fn)

b)

gravitational force (Fg)

c)

push or pull (Fp)

d)

static friction (Fs)

47.

force from a string or cable that stretches or pulls; pulls outward along the string or cable.

a)

tension force (FT)

b)

normal force (Fn)

c)

gravitational force (Fg)

48.

contact force that resists motion

a)

friction (Ff)

b)

static friction (Ffs)

c)

kinetic friction (Fks)

d)

air resistance (Fair)

49.

contact force that exists between stationary objects, preventing motion

a)

static friction (Ffs)

b)

friction (Ff)

c)

normal force (Fn)

d)

gravitational force (Fg)

50.

contact force that opposes motion between moving surfaces

a)

kinetic friction (Ffk)

b)

static friction (Ffs)

c)

net force (Fnet)

d)

work

51.

contact force between an object and the air that resists motion

a)

air resistance (Fair)

b)

gravitational force (Fg)

c)

kinetic energy

52.

drawing that shows the size and direction of all forces acting on an object.

a)

free body diagram

b)

motion map

c)

heating curve

d)

energy diagram

53.

sum of all forces acting on an object

a)

net force

b)

normal force

c)

total force

d)

sum force

54.

select all statements that are true

a)

only parallel forces can be added

b)

before adding, you need to decide if forces are positive or negative

c)

right and up are positive

d)

left and down are negative

e)

only perpendicular forces can be added

55.

when ____________ forces act on an object, one or more vectors need to be separated into x - and y- component.

a)

non-parallel

b)

parallel

c)

perpendicular

d)

equal

56.

this picture shows

a)

formula for x- y- components for non-parallel forces

b)

formula for measure of a vector

c)

formula for x- y- components for parallel forces

57.

___________ forces are equal in magnitude and act in opposite directions

a)

balanced

b)

unbalanced

c)

gravitational

d)

friction

58.

select all that is true of unbalanced forces:

a)

forces are not of equal magnitude

b)

forces don't point in opposite directions

c)

forces are equal

d)

forces are of equal magnitude

59.

when forces acting on an object are exactly equal and opposite, then:

a)

object in state of equilibrium

b)

net force is zero

c)

no change in motion

d)

change in motion

e)

net force is negative or positive

60.

when forces are unbalanced:

a)

net force is either positive or negative

b)

change in motion in direction of net force

c)

net force is zero

d)

no change in motion

61.

box is being pulled to the right. The free body diagram is shown. What is the magnitude of the kinetic frictional force?

a)

25 N

b)

125 N

c)

375 N

d)

500 N

62.

A box experiencing a gravitational force of 600 N is being pulled to the right with force of 250 N. A 25 N frictional force acts on the box as it moves to the right.

What is the net force in the y-direction?

a)

0 N

b)

25 N

c)

225 N

d)

250 N

63.

newton's first law of motion states

a)

object at rest will stay at rest unless acted upon by external force

b)

object in motion will stay in motion unless acted upon by external force

c)

object at rest will start to move spontaneously

d)

object in motion will come to a stop eventually

64.

select statements true about static equilibrium:

a)

object is at rest

b)

net force is zero

c)

object is in motion

d)

object has constant velocity

65.

select true statements about dynamic equilibrium:

a)

object is in motion

b)

object has constant velocity

c)

object has a net force of zero

d)

object is at rest

66.

natural tendency of objects to resist a change in motion

a)

inertia

b)

density

c)

displacement

d)

momentum

67.

mass and inertia are ...

a)

directly proportional

b)

inversely proportional

c)

not at all related

d)

the same thing

68.

newton's third law of motion states

a)

for every action there is an equal and opposite reaction

b)

for every action there is an unequal reaction

c)

for some actions, there are equal reactions

69.

Which object is in static equilibrium?

a)

a rolling ball that has a net force acting on it

b)

a cruising car that has no net force acting on it

c)

a book that has no net force acting on it and is sitting on a table

d)

a vase that has a net force acting on it and is sitting on a shelf

70.

Newton's first law of motion is also called the law of

a)

inertia

b)

matter

c)

reaction

d)

forces

71.

In deep space, there is very little friction. Once they launch a probe into deep space, where there are no external forces acting on it, scientists shut the probe’s engines off because the scientists want the probe to

a)

stop immediately

b)

speed up

c)

slow down

d)

move at a constant velocity

72.

Lien is pushing a box across a table. She used a force of 100 N to get the box moving. Which force did she overcome to get the box moving?

a)

downward force of gravity on box

b)

upward force of table on box

c)

reaction force on the box

d)

push force on the box

73.

newton's second law of motion states

a)

acceleration of an object is directly proportional to net force

b)

acceleration is inversely proportional to the mass

c)

acceleration is inversely proportional to net force

d)

acceleration is directly proportional to mass

74.

force is equal to

a)

mass times acceleration

b)

mass times speed

c)

speed times mass

d)

mass times work

75.

recoil is a direct result of which of newton's laws of motion?

a)

second and third

b)

second and first

c)

first and third

d)

none

76.

measure of the force due to gravity on an object

a)

weight

b)

mass

c)

acceleration

d)

distance

77.

this is the formula for:

a)

weight

b)

gravity

c)

acceleration

d)

displacement

78.

How much force is needed to accelerate an object of mass 90 kg at a rate of 1.2 m/s^2?

a)

0.013 N

b)

75 N

c)

108 N

d)

1080 N

79.

Chang sees the following formula on a website about Newton’s second law.

a = ∑ F / m

What does the symbol ∑ F in the formula indicate that Chang needs to do?

a)

find net force

b)

use only forces acting in the direction of motion

c)

combine horizontal and vertical forces

d)

multiply horizontal and vertical forces

80.

An object pulled to the right by two forces has an acceleration of 2.5 m/s2. The free-body diagram shows the forces acting on the object.

What is the weight of the object?

a)

50 N

b)

98 N

c)

313 N

d)

490 N

81.

momentum (p) is

a)

mass times velocity

b)

mass times acceleration

c)

mass times speed

d)

mass time displacement

82.

force applied to an object over a time interval that causes a change in momentum

a)

impulse

b)

momentum

c)

work

d)

gravitational force

83.

unit for impulse (select more than one)

a)

N * S (newton second)

b)

kg * m/s (kilogram meters per second)

c)

J (joules)

d)

N (newtons)

84.

the picture shows that

a)

change in momentum is equal to impulse

b)

change in force is equal to momentum

c)

change in impulse is equal to acceleration

d)

change in momentum is equal to change in velocity

85.

concerning impulse, force and time have....

a)

an inverse relationship

b)

a direct relationship

c)

no correlation

d)

no effect

86.

while the change in momentum will remain the same during a collision, the force needed to bring an object to a stop can be ___________ if time of collision is _________.

a)

decreased, increased

b)

increased, decreases

c)

eradicated, eradicated

87.

when object have the same velocity...

a)

object with greatest mass has greatest momentum

b)

object with least mass has greatest momentum

c)

object with greatest mass has least momentum

88.

when objects have the same mass...

a)

object with greatest velocity has the greatest momentum

b)

object with greatest velocity has the least momentum

c)

object with least velocity has the most momentum

89.

impulse comparisons - select all true statements

a)

when same force applied, longest contact time means greatest impulse

b)

when same force applied, shortest contact time means greatest impulse

c)

if same contact time, greatest force means greatest impulse

d)

if same contact time, least force means greatest impulse

90.

An object with a mass of 1.5 kg changes its velocity from +15 m/s to +22 m/s during a time interval of 3.5 seconds. What impulse was delivered to the object?

a)

3.0 N • s

b)

11 N • s

c)

25 N • s

d)

56 N • s

91.

group of related objects that interact and form a complex whole without being affect by outside forces

a)

closed system

b)

open system

c)

closed group

92.

the sum of the momentums in a closed system

a)

total momentum

b)

momentum

c)

total impulse

d)

acceleration

93.

this law states that total momentum of interacting objects does not change in a closed system

a)

law of conservation of momentum

b)

law of conservation of energy

c)

law of conservation of mass

94.

inelastic collision

a)

some kinetic energy transferred

b)

convert kinetic energy to potential energy, noise, or heat

c)

deform object

d)

momentum conserved

e)

energy conserved

95.

perfectly inelastic collision

a)

momentum conserved

b)

energy conserved

c)

max amount of kinetic energy converted

d)

objects move as one after collision

96.

formulas for

a)

perfectly inelastic collisions

b)

elastic collisions

c)

inelastic collisions

97.

elastic collision

a)

two or more objects collide and bounce apart

b)

mass conserved

c)

momentum conserved

d)

velocities may change

e)

velocities conserved

98.

which collisons are elastic?

a)

bumper cars colliding

b)

ball bouncing

c)

hat being sat on

d)

door being slammed

99.

which collisions are perfectly inelastic?

a)

man jumping in cab

b)

mud sticking to car

c)

bumper cars colliding

d)

door being slammed

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