test Flashcards
1
Q
Density=
A
= mass/volume Kg/m ²
2
Q
Weight=
A
“the force of gravity on mass” weight = mass x g g=9.81 on earth F=ma
3
Q
Area=
A
=m²
4
Q
Pressure=
A
=Force / Area units are P or Pascals or N/m²
5
Q
The simple Machine (6)
A
1) Wedge 2) Pully 3) Screw 4) Lever 5) Inclined plane 6) Wheel/axle
6
Q
Energy Types (5)
A
1) Electric 2) Chemical 3) Thermal 4) Nuclear 5) Mechanical
7
Q
Work=
A
=force x distance W=F x d unit is Joule or J or N x m
8
Q
Force=
A
= Mass x acceleration F=ma unit is Newton or N or Kg x m/s²
9
Q
Power=
A
=Work x time P=W x T units are Watts or W or J/s
10
Q
Acceleration=
A
= v2-v1/t2-t1 m/s²
11
Q
Mass metric units are
A
Kg
12
Q
Mechanical Advantage=
A
=Fo/Fi
13
Q
Efficency=
A
=Wi/Wo
14
Q
Gravitational Potential Energy=
A
= weight x height
15
Q
Kinetic Energy=
A
=mass x velocity²/2 “energy of motion”
