Kinematics and Dynamics

Question 1

What are the units of Force?

Answer 1

kg*m/s^2 = Newton

Question 2

What are the units for work/energy?

Answer 2

kg*m^2/s^2 = Joule

Question 3

What are the units of Power?

Answer 3

W = kg*m^2/s^3

Question 4

What is the rule for adding vectors?

Answer 4

tip to tail

Question 5

If vector*vector = scalar, use what equation:

Answer 5

A*B = |A||B|costheta

Question 6

If vector*vector = vector, use what equation:

Answer 6

AxB = |A||B|sintheta

Question 7

What is the equation for average velocity?

Answer 7

v = deltax/ delta t m/s

Question 8

What is the equation for universal gravitational force?

Answer 8

Fg = Gm1m2/r^2

Question 9

What is the value of G?

Answer 9

6.67x10^-11 N*m^2/kg

Question 10

What is the equation for static friction?

Answer 10

0

Question 11

What is the equation for kinetic friction?

Answer 11

fk = ukN

Question 12

What is the equation for force of gravity?

Answer 12

Fg = mg

Question 13

What is the equation for acceleration?

Answer 13

a = deltav / deltat

Question 14

What are Newton’s Laws?

Answer 14

1. A body at rest/motion will remain that way until acted on - Fnet = ma = 0
2. Force acting on an object is equal to the mass of that object time its acceleration - F = ma
3. For every action, there is always an opposed but equal reaction - Fab = -Fba

Question 15

What are the kinematic equations?

Answer 15

v = v0 + at
x = v0t + a*t^2/2
v^2 = v0^2 +2ax
x = vt

Question 16

What are the equations for inclined planes?

Answer 16

Fg,parallel = mgsintheta
Fg,perpendicular = mgcostheta

Question 17

What is the equation for centripetal force?

Answer 17

Fc = m*v^2/ r

Question 18

What is the equation for torque?

Answer 18

equation for torque?
T = r x F = rFsintheta
r = length of lever arm
F = magnitude of the force
theta = angel between the lever arm and core vectors