Physics

Question 0

Gravitational Motion

Answer 0

Same as linear acceleration, but a = 32.2ft/s^2 for Earth, 9.8m/s^2

Question 1

Acceleration

Answer 1

V^2 = V(0)^2 + 2as
V = V(0) + at
a = V(0)t + 1/2at^2
V: velocity
t: time
a: acceleration
s: distance

Question 2

2nd Motion Law

Answer 2

F = ma/g(c)
m: mass
a: acceleration
g(c): gravitational constant, 32.2 if using lbs, 1 N-m (j)

Question 3

dyne

Answer 3

Unit of force, = 1g-cm/s^2

Question 4

Friction

Answer 4

F = mu * N
F: frictional force
mu: friction coefficient
N: “normal” force pressing two surfaces together (eg gravity)

Question 5

Work

Answer 5

W = FS
W: work, units like ft-lbf, Newton-meter (joule)
F: force, gh if working against gravity, g is force of gravity and h is height
S: distance

Question 6

Kinetic Energy

Answer 6

KE = (m * V^2)/2

Question 7

Potential Energy

Answer 7

PE = mgh

mass, gravity, height

Question 8

Rotational Motion

Answer 8

V = C * R
V: linear velocity
C: circumference of rotating path
R: RPM

Question 9

Pascal

Answer 9

Pascal = newton/m^2

Question 10

Hydrostatic Pressure

Answer 10

P = P(0) + rho * g * h
P(0): pressure on upper surface of fluid column
rho: fluid density
g: force of gravity
h: height

Question 11

Buoyant Force

Answer 11

Weight of fluid displaced by an object.

Question 12

Weight

Answer 12

mass * gravity

Question 13

Specific Gravity

Answer 13

Weight of a given volume of an object / weight of an equivalent volume of water

Question 14

Apparent Weight

Answer 14

True weight - buoyant force

Question 15

Force

Answer 15

mass * acceleration