00 Equations deck- 3rd

Question 1

average speed, distance and time

Answer 1

speed = distance ÷ timespeed = distance⁄time

Question 2

force, mass and acceleration

Answer 2

force = mass x acceleration

Question 3

acceleration, change in velocity and time taken

Answer 3

acceleration = change in velocity ÷ time taken

Question 4

density, mass and volume

Answer 4

density = mass ÷ volume

Question 5

weight, mass and gravitational field strength

Answer 5

weight = mass x gravitational field strength

Question 6

pressure, force and area

Answer 6

pressure = force ÷ area

Question 7

wave speed, frequency and wave length

Answer 7

wave speed = frequency x wave length

Question 8

efficiency, useful energy output and total energy input

Answer 8

efficiency = useful energy output ÷ total energy input

Question 9

pressure difference, depth, density and g

Answer 9

pressure difference = density x g x depth

Question 10

orbital speed, radius of orbit and time period of orbit

Answer 10

orbital speed = (2π x radius of orbit)/time period of orbit
v = (2πr)/T