Chapter 3, Forces And Pressure

Question 1

What is the difference between mass and weight

Answer 1

Mass is a measure of the amount of matter in a body

Weight is the gravitational force acting on an object that has mass

Question 2

Whats the formula for gravitational field strength

Answer 2

W=mg or g= w/m

Question 3

Formula for density

Answer 3

D =m(kg)/v(m^3)

Question 4

Formula for pressure (with units)

Answer 4

Pressure (pa) =force(N)/contact area (m^2)