Memorise Equations

Question 1

Give word equation for distance

Answer 1

Distance travelled = average speed x time

Question 2

Give word equation for acceleration

Answer 2

Acceleration = change in velocity / time taken

Question 3

Give word equation for force

Answer 3

Force = mass x acceleration

Question 4

Give word equation for weight

Answer 4

Weight = mass x gravitational field strength

Question 5

Give word equation for momentum

Answer 5

Momentum = mass x velocity

Question 6

Give word equation for change in gravitational potential energy

Answer 6

Change in gravitational potential energy = mass x gravitational field strength x change in vertical height

Question 7

If the word equation for kinetic energy

Answer 7

Kinetic energy= 1/2 x mass x (speed) squared

Question 8

Give word equation for efficiency

Answer 8

Efficiency equals ( useful energy transferred by the device ) 
                                        /(total energy supplied to the device)

Question 9

Give word equation for wave speed using frequency

Answer 9

Wave speed = frequency x wavelength

Question 10

Give word equation for wave speed using distance

Answer 10

Wave speed = distance / time

Question 11

Give symbol equation for acceleration

Answer 11

a = (v-u)

/ t

Question 12

Give symbol equation for force

Answer 12

F = m x a

Question 13

Give symbol equation for weight

Answer 13

W = m x g

Question 14

Give symbol equation for momentum

Answer 14

p = m x v

Question 15

Give symbol equation for change in gravitational potential energy

Answer 15

🔼GPE = m x g x 🔼h

Question 16

Give symbol equation for kinetic energy

Answer 16

KE = 1/2 x m x (v) squared

Question 17

Give symbol equation for wave speed using frequency

Answer 17

v = f x lambda

Question 18

Give symbol equation for wave speed using distance

Answer 18

v = d

/t