physics 1

Question 1

solid density

Answer 1

• very high density
• particles packed closely together
• have a lot of mass for their volume

Question 2

liquid density

Answer 2

• high density
• particles are close together
• have a lot of mass for their volume

Question 3

gas density

Answer 3

• low density
• particles are very far apart
• only have a small mass for their volume

Question 4

why is polystyrene a solid but has a low density

Answer 4

they have a very open structure and is full of air spaces. It has a small mass for its volume

Question 5

Equation for Change in Momentum

Answer 5

change in momentum=force × time=impulse

Question 6

equation for momentum

Answer 6

p = mv
p = momentum
m = mass
v = velocity

momentum = mass x velocity