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Flashcards in equations Deck (16)
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1
Q

weight (N) =

A

mass (kg) X gravitational field strength (N/kg)

2
Q

mass (kg) =

A

weight (N) / gravitational field strength (N/kg)

3
Q

gravitational field strength (N/kg) =

A

weight (N) / mass (kg)

4
Q

work done (J) =

A

force (N) X distance (m)

5
Q

force (N) =

A

work done (J) / distance (m)

6
Q

distance (m) =

A

work done (J) / force (N)

7
Q

force (N) (extension equation)

A

spring constant (N/m) x extension (m)

8
Q

elastic potential energy (J) =

A

1/2 X spring constant (N/M) X extension (squared) (m)

9
Q

distance travelled (m) =

A

speed (m/s) X time (s)

10
Q

acceleration (m/s^2) =

A

change in velocity (m/s) / time (s)

11
Q

final velocity^2 (m/s) - initial velocity^2 (m/s) =

A

2 X acceleration X distance

12
Q

stopping distance=

A

thinking distance + braking distance

13
Q

momentum ( kg m/s) =

A

mass(kg) X velocity (m/s)

14
Q

period (s) =

A

1/ frequency (Hz)

15
Q

wave speed(m/s) =

A

frequency (Hz) X wavelength (m)

16
Q

the motor effect

force (N) =

A

magnetic flux density (T) X current (A) X length (m)