Units And Dimensions

Question 1

Pico (p)

Answer 1

10^-12

Question 2

Nano-(n)

Answer 2

10^-9

Question 3

Micro- (u)

Answer 3

10^-6

Question 4

Milli-(m)

Answer 4

10^3

Question 5

Centi- (c)

Answer 5

10^-2

Question 6

Kilo-(k)

Answer 6

10^3

Question 7

Mega-(M)

Answer 7

10^6

Question 8

Giga-(G)

Answer 8

10^9

Question 9

Displacement

Answer 9

An objects change in position

Question 10

Is displacement a vector?

Answer 10

Yes, it takes into account direction

Question 11

Total distance traveled is not the same as

Answer 11

Displacement

Question 12

Velocity always points in the same direction as

Answer 12

Displacement

Question 13

Velocity tells us

Answer 13

How fast an objects position is changing

Question 14

Speed

Answer 14

The magnitude of the velocity vector

Question 15

Velocity is

Answer 15

Speed plus direction, so if two objects velocities are the same so are their speeds

Question 16

Acceleration tells us

Answer 16

How fast an object’s velocity changes

Question 17

Can an object accelerate if its speed is constant?

Answer 17

Yes,acceleration is change in velocity

Ball at the top will be acceleration although its velocity will be zero

Question 18

If the acceleration points in the same direction as the initial velocity

Answer 18

The objects speed is increasing

Question 19

If acceleration is perpendicular to velocity an objects speed

Answer 19

Is constant

Question 20

If acceleration is in the opposite direction from velocity that means

Answer 20

The objects speed is decreasing

Question 21

If acceleration is at an angle between 0-90 to the velocity the objects speed

Answer 21

Is increasing and direction of v is changing

Question 22

If acceleration is at an angle between 90-180 to velocity the objects speed is

Answer 22

Decreasing and direction of v is changing

Question 23

Missing a

Answer 23

D = 1/2(Vo+V)t

Question 24

Missing d

Answer 24

V=Vo + at

Question 25

Missing v

Answer 25

D=Vot+1/2at^2

Question 26

Missing Vo

Answer 26

D=vt-1/2at^2

Question 27

Missing t

Answer 27

V^2=Vo^2+2ad

Question 28

A quantity is missing when

Answer 28

It’s not given or asked for

Question 29

The slope of a position vs time graph

Answer 29

Gives velocity

Question 30

The slope of a velocity vs. time graph gives the

Answer 30

Acceleration

Question 31

The area under a velocity vs. time graph gives

Answer 31

Displacement

Or use Big 5 #1 : d=1/2(Vo+V)t

Question 32

The Big Five is used only

Answer 32

In situations where the acceleration is constant

Question 33

If the horizontal acceleration is zero throughout the projectiles flight

Answer 33

The horizontal velocity will be constant throughout the flight