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Physics GCSE Y11 > Units & Equations > Flashcards

Flashcards in Units & Equations Deck (42)
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1

What is the equation relating speed, distance and time?

Distance = speed x time or Speed = distance / time

2

What is the unit for speed?

m/s

3

What is the equation relating weight, mass and gravitational field strength?

weight = mass x gravitational field strength

4

What is the unit for weight?

N (it is a force)

5

What is the unit for mass?

kg

6

What is the equation relating work done, force and distance?

work done = force x distance

7

What is the unit for work done?

J or Nm

8

What is the equation relating force in a spring. spring constant and extension?

force = spring constant x extension

9

What is the unit for force?

Newtons

10

What is the equation that relates moment, force and distance?

Moment = force x distance

11

What is the unit for moment?

Nm

12

What is the equation relating pressure, force and area?

pressure = force / area

13

What is the unit for pressure?

N/m2 or Pa

14

What is the equation relating acceleration, change in velocity (speed) and time?

acceleration = change in speed / time taken

15

What is the unit for acceleration?

m/s2

16

What is the equation relating force, mass and acceleration?

force = mass x acceleration

17

What is the equation relating momentum, speed and mass? (Higher Tier Only)

momentum = speed x mass

18

What is the unit for momentum?

kgm/s

19

What is the equation for kinetic energy?

kinetic energy = 1/2 x mass x speed^2

20

What is the unit for kinetic energy?

J, Joules (all energy has units Joules)

21

What is the equation for gravitational potential energy?

G.P.E = mass x gravity x height

22

What is the unit for gravitational potential energy?

J

23

What is the equation relating power, energy transferred and time?

Power = energy transferred / time

24

What is the unit for power?

Watt, W

25

What is the equation relating power, work done and time?

Power = work done / time or Work done = power x time

26

What is the equation for efficiency?

efficiency = useful power/energy / total power/energy

27

What is the equation relating wave speed, frequency and wavelength?

wave speed = wavelength x frequency

28

What is the unit for wave speed?

m/s

29

What is the unit for wavelength?

m

30

What is the unit for frequency?

Hz