Physics Equations

Question 1

Kinematic equation if X is not given or shown.

Answer 1

V = V_o + at

Question 2

Kinematic equation if a is not given or shown.

Answer 2

X = ¹/₂ (V + V_o)t²

Question 3

Kinematic equation if V is not given or shown.

Answer 3

X = V_ot + ¹/₂ at²

Question 4

Kinematic equation if t is not given or shown.

Answer 4

V² = V_o² + 2aX

Question 5

What is Newton’s first law?

Answer 5

Objects in rest will stay at rest and objects in motion will stay in motion in a straight line unless acted upon by an unbalanced force.

Question 6

What is Newton’s second law?

Answer 6

Force = mass x acceleration

Question 7

What is Newton’s third law?

Answer 7

for every action there is an equal and opposite reaction. (Normal force)

Question 8

Work formula

Answer 8

Force x distance cos (Ø)

Ø is the angle between the force and direction of motion

Question 9

First Law of Thermodynamics

Answer 9

Question 10

buoyant force equation

Answer 10

Question 11

continuity equation

Answer 11

Question 12

Electro static force equation

Answer 12

Question 13

Electrostatic Field equation

Answer 13

Question 14

Electric potential

Answer 14

Kq₁q₂ / r

*graph wise, potential energy is always decreasing

Question 15

Ohm’s law

Answer 15

Question 16

Magentic Force

Answer 16

Left hand trick keep thumb aligned with the current qv

fingers alligned with the magnetic field

and magnetic force point out of palm

Question 17

Magnetic Field equation

Answer 17

thumb will represent the movment of positive charges while we wrap our fingers around wire giving us direction of the field.

The equation illustrated Is just for a straight wire if your doing a cicular loop just don’t use 2π

Question 18

period-frequency relation

Answer 18

Question 19

Doppler shift

Answer 19

Question 20

Snell’s law

Answer 20

Question 21

mirror and lens equation

Answer 21

F = ¹/₂ r

Question 22

Mirror equations

Answer 22

• -When M is negative is inverted
• -When M is positive it is Upright
• -When I M I Is less than one than image is reduced
• -When I M I Is greater than one than image is big
• -When i is same side as source is virtual
• -When i is opposite side of source is real
• -When r is positive it’s a concave ) mirror
• -When r is negative it’s a convex ( mirror

Question 23

Lense equations

Answer 23

• -When M is negative is inverted
• -When M is positive it is Upright
• -When I M I Is less than one than image is reduced
• -When I M I Is greater than one than image is big
• -When i is opposite side of source is real
• -When i is same side as source is negative
• -When r is negative it’s a concave ) lense
• -When r is positive it’s a convex ( lense