Paper 2 Equations

Question 1

Equation for the moment of a force about a pivot

Answer 1

Moment (Nm) = Force (N) x Distance (m)

Question 2

Equation for speed of an object

Answer 2

Speed (m/s) = Distance (m) / Time (s)

Question 3

Equation for acceleration of an object

Answer 3

Acceleration (m/s2) = Change in Velocity (m/s) / Time Taken (s)

Question 4

Equation to calculate the force which gravity acts on

Answer 4

Weight (N) = mass (kg) x Gravitational Field Strength (N/kg)

Question 5

Hooks law equation

Answer 5

Force (N) = Spring constant (N/m) x extension (m)

Question 6

Moment of a moving object

Answer 6

Moment (kg m/s) = mass (kg) x velocity (m/s)

Question 7

Resultant force acting on an object

Answer 7

Force (N) = Mass (kg) x acceleration (m/s2)

Question 8

Equation for Pressure

Answer 8

Pressure (Pa) = Force (N) / Area (m2)

Question 9

Equation for a speed of a wave

Answer 9

Wave Speed (m/s) = Frequency (Hz) x Wavelength (m)

Question 10

Magnification equation

Answer 10

Magnification = image height / object height