Physics

Question 1

Dot Product of vectors

Answer 1

(Magnitude 1)(Mangitude 2)Cos(theta) = scalar

Question 2

Cross Product of Vectors

Answer 2

(Magnitude 1)(Magnitude 2)Sin(theta) = vector

Question 3

Displacement

Answer 3

Vector representation of change in position

Question 4

velocity

Answer 4

Change in displacement over time

Question 5

Average velocity/speed

Answer 5

Total displacement or distance/ time

Question 6

Instantaneous Velocity/speed

Answer 6

Limit of change of displacement or distance over time as time approaches zero

Question 7

Force

Answer 7

Push or pull that has the potential to cause acceleration

Question 8

Gravity

Answer 8

The attractive force between two bodies as a result of their mass

Question 9

Friction

Answer 9

The force that opposes motion due to electrostatic interactions at the surfaces of the two objects

Question 10

Static friction definition

Answer 10

Exists between two objects that are not in motion relative to each other

Question 11

Kinetic Friction Definition

Answer 11

Exists between two objects that are in motion relative to each other

Question 12

Mass

Answer 12

Measure of inertia of an object - the amount of material

Question 13

Gravity

Answer 13

Force experienced by mass due to gravity

Question 14

Acceleration

Answer 14

change in velocity over time

Question 15

Newton’s first law

Answer 15

Object at rest stays at rest an object in motion stays in motion until acted upon by an outside force.

Question 16

Newton’s second law

Answer 16

Acceleration is the result of the sum of forces acting on an object

Question 17

Newton’s Third Law

Answer 17

Every action has an equal and opposite reaction

Question 18

Universal Gravitational Equation

Answer 18

Fg=(Gm1m2)/(r^2)

Question 19

Static Friction Equation

Answer 19

fs ≤ μsN

Question 20

Kinetic Friction

Answer 20

fk=μkN

Question 21

Force of gravity on earth

Answer 21

Fg=mg

Question 22

Kinematics equations

Answer 22

vf = vi + (a)(t)
x = (vi)(t) + (a)(t^2)/2
v^2 = vi^2 + 2ax
x=vt (no acceleration)

Question 23

Components of gon inclined planeravity

Answer 23

FgII = mgsin(theta)

FgI - mgcos(theta)

Question 24

Centripetal Force Equation

Answer 24

Fc = (mv^2)/r

Question 25

Torque Equation

Answer 25

τ = r X F = rFsin(theta)

Question 26

Kinetic Energy

Answer 26

K=(1/2)mv^2

Question 27

Gravitational Potential Energy

Answer 27

U=mgh

Question 28

Elastic Potential Energy

Answer 28

U=1/2kx^2

Question 29

Total Mechanical Energy

Answer 29

E = U + K

Question 30

Conservative Forcers

Answer 30

Path independent and don’t dissipate energy

Question 31

Nonconservative Forces

Answer 31

Path dependent and dissipates energy

Question 32

The equation for energy change when there are no conservative forces

Answer 32

ΔE = ΔU + ΔK = 0

Question 33

Work done by nonconservative forces

Answer 33

W = ΔE = ΔU + ΔK

Question 34

Work equation

Answer 34

W = Fdcos(theta)

dot product