Some Equations

Question 1

The equation for weight

Answer 1

W=mg

Weight(N) = mass (kg) x gravitational field strength (N/kg)

Question 2

Weight include force

Answer 2

W=Fs

Weight(J) = Force (N) x s (distance. m)

Question 3

Force on a spring

Answer 3

F=ke

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

Question 4

Momentum equation

Answer 4

M = Fd

Momentum (Nm) = Force (N) x distance (m)

Question 5

Pressure equation

Answer 5

p = F ÷ A

pressure (pa) = Force (N) ÷ Area (m^2)

Question 6

Pressure in a liquid

Answer 6

p= h p g

pressure (pa) = height (m) x density ( kg/m^3) x gravitational field strength (N/kg)

Question 7

Equation for speed/ velocity

Answer 7

v= d ÷ t

Speed/velocity ( m/s) = distance (m) ÷ time (s)