Motion

Question 1

An object in motion will stay in motion in a straight line, forever, unless acted upon by an unbalanced force.

Answer 1

Half of Newton’s First Law

Question 2

An object at rest will remain at rest unless acted upon by an unbalanced force

Answer 2

The other half of Newton’s First Law

Question 3

If an object is experiencing an unbalanced force, we know that the _________ _____________ is not zero.

Answer 3

Net Force

Question 4

If objects in motion tend to stay in motion, forever, unless acted upon by a net force, why do we seem to always see objects slowing down on their own?

Answer 4

Friction

(This is the force usually slowing down objects, and it is hard to actually see where the friction is coming from)

Question 5

Another name for Newton’s First Law

Answer 5

Law of Inertia

Question 6

Inertia means almost the same thing as __________

Answer 6

Mass

Question 7

Objects with bigger mass have more _________

Answer 7

Inertia

Question 8

If all the forces on an object are balanced, then there is no net force. In this case, we say the object is in ____________

Answer 8

Equilibrium

(Note: An object in equilibrium will have no acceleration, this means it could be either standing still OR moving along at a constant velocity)

Question 9

Gravity can apply a ___________

Answer 9

Force

Question 10

Magnetism can apply a __________

Answer 10

Force

Question 11

Electrical charges can apply a _________

Answer 11

Force

(Think of static electricity pulling a sock onto your shirt when you take them out of dryer.)

Question 12

“m” is a unit of

Answer 12

distance

Question 13

“in” is a unit of

Answer 13

distance

Question 14

“cm” is a unit of

Answer 14

distance

Question 15

“miles” is a unit of

Answer 15

distance

Question 16

”s” is a unit of

Answer 16

time

”s” means “seconds”

Question 17

“hr” is a unit of

Answer 17

time

Question 18

“days” is a unit of

Answer 18

time

Question 19

“m/s” is a unit of

Answer 19

speed

(Units of speed will always have a distance over a time)

Question 20

“cm/day” is a unit of

Answer 20

speed

(Units of speed will always have a distance over a time)

Question 21

“mm/yr” is a unit of

Answer 21

Speed

(Units of speed will always have a distance over a time)

Question 22

“m/s North” is a unit of

Answer 22

Velocity

(notice that it has a direction included)

Question 23

“mm/yr East” is a unit of

Answer 23

Velocity

(notice that it has a direction included)

Question 24

“cm/hr West” is a unit of

Answer 24

Velocity

(notice that it has a direction included)

Question 25

“miles North” is a unit of

Answer 25

Displacement

(Displacement is a vector, so it has both magintude and direction.)

Question 26

“cm West” is a unit of

Answer 26

Displacement

(Displacement is a vector, so it has both magintude and direction.)

Question 27

Displacement

Vector or Scaler?

Answer 27

Vector

Question 28

Velocity

Vector or Scaler?

Answer 28

Vector

Question 29

Speed

Vector or Scaler?

Answer 29

Scaler

(has only magnitude)

Question 30

Distance

Vector or Scaler?

Answer 30

Scaler

(Distance has magnitude only)

Question 31

m / s² is a unit of

Answer 31

acceleration

(notice the the units on the bottom is seconds squared)

Question 32

“inches / day²“ is a unit of

Answer 32

acceleration

(notice the the units on the bottom is days squared)

Question 33

A displacement/time graph is very similar to a ..

Answer 33

Distance/time graph

Question 34

Displacement

Answer 34

How far you are from where you started.

(Very similar to “distance”)

Question 35

the “sum of forces” on an object means

Answer 35

the net force on the object