Unit Conversions
What are the 3 temperature scales?
C, F, K
Which type of energy is stored?
Potential
What is the equation for slope?
Rise / Run
What is the unit for Force?
Newton
What are the 6 simple machines?
Screw - pulley - wedge - wheel & axle - inclined plane - lever
Which measurement system do we use in the USA?
Imperial
What is the unit for energy?
Joule
What does the slope of a distance time graph tell us?
Velocity
If you push a box with 125 N of force and it does not move but the temperature is 25 degrees C and you are pushing as a 32 degree angle , how much work have you done? Include units.
0 J
How many types of levers are there?
3
What is the standard metric unit for mass?
kg
Heat cannot be created nor destroyed but it can be "lost" as what?
heat
What does a flat, horizontal line of a velocity time graph mean?
Constant velocity
What does SOH CAH TOA stand for?
SIN = OPP/ HYP
COS = ADJ/ HYP
TAN = OPP / ADJ
How do I calculate mechanical advantage?
Output force / Input force
What is the conversion factor for yards and feet?
3 ft = 1 yard
What do Kinetic and Potential energy always equal when added together?
100%
What does the area under the curve of a velocity time graph tell you?
Displacement
If I am running for 20 seconds and have use 10 N of force over 25 meters, how powerful am I? Include units.
250/20 = 12.5 watts
A machine does 100 J of work while a person does 20 J of work. How efficient is the machine?
500%
What is the freezing point for water in Kelvin?
273.15
What are the equations for PE and KE?
PE = mgh
KE = 1/2mv2
Explain what a steep angle on velocity time graph means.
Large acceleration (or change in velocity)
I have a momentum of 15,000,000 kg m/s. I am moving at 15 m/s. How massive am I?
1,000,000 kg
Draw a 2nd class lever and label the 3 key parts in the correct order.
Effort - Load - Fulcrum (Wheelbarrow)