Forces, vehicle safety and Kinetic & grav. potential energy

?
  • Created by: Olivia
  • Created on: 03-05-13 09:31
Terminal speed is...
final steady speed that an object travels at once the forces are balanced
1 of 24
Anything moving through a fluid experiences...
drag
2 of 24
The faster the speed...
the more drag it experiences
3 of 24
When drag = weight...
the object will fall at a steady speed
4 of 24
Resulting force is F =
mg - D
5 of 24
Resultant force =
F1 - F2 = ma
6 of 24
Stopping distance =
Thinking distance + braking distance
7 of 24
Thinking distance =
speed x reaction time
8 of 24
Braking distance =
.
9 of 24
The shorter the impact time...
the greater the impact force
10 of 24
Impact force=
rate of change of momentum (ma)
11 of 24
Work done is...
energy transfered
12 of 24
Work done =
force x distance moved in direction of the force
13 of 24
W =
f x d
14 of 24
The area of a force distance graph =
work done
15 of 24
Ek =
.
16 of 24
Ep =
mg h
17 of 24
Power is...
the rate of transfer of energy
18 of 24
Power 1 =
.
19 of 24
Power 2 =
.
20 of 24
Power 3 =
.
21 of 24
Efficiency =
.
22 of 24
Efficiency is expressed as...
a %
23 of 24
Improving efficiency =
reducing friction
24 of 24

Other cards in this set

Card 2

Front

Anything moving through a fluid experiences...

Back

drag

Card 3

Front

The faster the speed...

Back

Preview of the front of card 3

Card 4

Front

When drag = weight...

Back

Preview of the front of card 4

Card 5

Front

Resulting force is F =

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Forces resources »