Forces and Pressure

Question 1

force (N)

Answer 1

mass (kg) x acceleration (m/s²)
or
rate of change of momentum

Question 2

weight on Earth (N)

Answer 2

mass (kg) x 10 (m/s²)

Question 3

momentum (kgm/s)

Answer 3

mass (kg) x velocity

Question 4

density (kg/m³)

Answer 4

mass (kg) / volume (m³)

Question 5

Hooke’s Law

Answer 5

force = contant x extension

Question 6

pressure (Pa)

Answer 6

force (N) / volume (m³)

Question 7

underwater pressure (Pa)

Answer 7

height (m) x density (kg/m³) x gravitational field strength ([10 on Earth] m/s²)

Question 8

moment (Nm)

Answer 8

force (N) x distance from pivot (m)