Kinematics and Dynamics

Question 1

FPS system stands for?

Answer 1

Foot-pound-second

Question 2

MKS system stands for?

Answer 2

Meter-kilogram-second

Question 3

CGS system stands for?

Answer 3

Centimeter-gram-second

Question 4

What are the units of N?

Answer 4

(kg*m)/(s^2)

Question 5

What are the units of dyne?

Answer 5

(g*cm)/(s^2)

Question 6

What does dyne measure?

Answer 6

Force

Question 7

What are the units of a joule?

Answer 7

(kg*(m^2))/(s^2)

Question 8

What are the units of an erg?

Answer 8

(g*(cm^2))/(s^2)

Question 9

What does a joule measure?

Answer 9

Energy

Question 10

What does an erg measure?

Answer 10

Energy

Question 11

What are the units of power?

Answer 11

Energy/second or (kg*(m^2))/(s^3)

Question 12

What does one angstrom measure?

Answer 12

10^(-10)m

Question 13

What does one electron-volt measure?

Answer 13

1.6x10^(-19)J

Question 14

What are the two components of a vector?

Answer 14

Magnitude and direction

Question 15

What is the component of a scalar?

Answer 15

Magnitude

Question 16

What is the difference between vector and scalar?

Answer 16

Only vector has direction

Question 17

Sine(theta)

Answer 17

Opposite/hypotenuse

Question 18

Cosine(theta)

Answer 18

Adjacent/hypotenuse

Question 19

Equation to determine scalar from two vectors

Answer 19

ABcos(theta)

Question 20

Equation to determine vector from two other vectors

Answer 20

ABsin(theta)

Question 21

Right hand rule

Answer 21

Thumb in the direction of A, fingers in the direction of B, palm will be the direction of C

Question 22

Is displacement a scalar or vector quantity?

Answer 22

Vector

Question 23

What is displacement?

Answer 23

Change in position in space

Question 24

What is the difference between displacement and distance?

Answer 24

Displacement is the net change in position and doesn’t depend on the path taken, distance is the total distance traveled and does take path into consideration

Question 25

Is distance a scalar or vector quantity?

Answer 25

Scalar

Question 26

Is velocity a scalar or vector quantity?

Answer 26

Vector

Question 27

Is speed a scalar or vector quantity?

Answer 27

Scalar

Question 28

What is velocity?

Answer 28

Rate of change of displacement in a given unit of time

Question 29

What is speed?

Answer 29

Rate of actual distance traveled in a given unit of time

Question 30

Is force a vector or scalar quantity?

Answer 30

Vector

Question 31

What is the gravitational force equation?

Answer 31

Fg=(Gm1m2)/(r^2)

Question 32

What does G (universal gravitational constant) equal?

Answer 32

6.67x10^(-11) (N8(m^2))/(kg^2)

Question 33

What is static friction?

Answer 33

Force between a stationary object and the surface upon which it rests

Question 34

What is kinetic friction?

Answer 34

Force between a sliding object and the surface upon which it is sliding

Question 35

Is the coefficient of static or kinetic friction larger and why?

Answer 35

Static because objects will stick until they start moving and then will slide more easily over one another

Question 36

Is mass a scalar or vector quantity?

Answer 36

Scalar

Question 37

What is mass?

Answer 37

A measure of the body's inertia or the amount of matter in an object

Question 38

What is weight?

Answer 38

Measure of gravitational force on a object's mass

Question 39

Is weight a scalar or vector quantity?

Answer 39

Vector

Question 40

How are mass and weight related?

Answer 40

Fg=mg

Question 41

What are the units of acceleration?

Answer 41

m/(s^2)

Question 42

Is acceleration a scalar or vector quantity?

Answer 42

Vector

Question 43

What is acceleration?

Answer 43

Rate of change of velocity | Depends on a force

Question 44

What is acceleration on a graph of velocity vs time?

Answer 44

Tangent

Question 45

Newton's first law

Answer 45

Fnet=0

Question 46

Law of inertia

Answer 46

An object at rest stays at rest and an object in motion stays in motion unless acted upon by another force

Question 47

Newton's second law

Answer 47

F=ma

Question 48

Newton's third law

Answer 48

Fab=-Fba

Question 49

Law of action and reaction

Answer 49

To every action there is always an opposite but equal reaction

Question 50

Equation for velocity of projectile

Answer 50

v=v0+at

Question 51

Equation for displacement of projectile

Answer 51

x=v0t+(a(t^2))/2

Question 52

Equation for velocity squared of projectile

Answer 52

v^2=(v0)^2+2ax

Question 53

Equation for force parallel to a plane

Answer 53

F=mgsin(theta)

Question 54

Equation for force perpendicular to a plane

Answer 54

F=mgcos(theta)

Question 55

Where does centripetal force point?

Answer 55

Into the circle

Question 56

What is the value of tangential force in uniform circular motion?

Answer 56

Zero

Question 57

Equation for magntitude of centripetal force

Answer 57

F=(m(v^2))/r

Question 58

Translational equilibrium occurs when?

Answer 58

Vector sum of all forces is zero

Question 59

Equation for torque?

Answer 59

r X F=rFsin(theta) r= length of lever arm F= force theta= angle between force and lever arm

Question 60

What does torque generate?

Answer 60

Rotational motion

Question 61

What is necessary for rotational motion?

Answer 61

Torque

Question 62

Does positive torque cause clockwise or counterclockrise rotation?

Answer 62

Counterclockwise

Question 63

Does negative torque cause clockwise or counterclockrise rotation?

Answer 63

Clockwise

Question 64

What sign does clockwise rotation have?

Answer 64

Negative torque

Question 65

What sign does counterclockwise rotation have?

Answer 65

Positive torque