Forces: Contact forces and Pressure

Created by

Adam Egerton

Cards (16)

What is air resistance?
Air resistance is a friction force that is created by air particles hitting an object
What is a balanced force? 
A balanced force occurs when a force and a opposite force are equal e.g. Thrust and friction
What is an unbalanced force? 
An unbalanced force is when two opposing forces aren't equal
What is streamlining? 
Streamlining is a process in which an object is made smooth and flat to minimize air resistance
What will happen to a stationary object when the forces acting on it are balanced? 
It will remain stationary
What will happen to a moving object when the forces acting are in are balanced? 
It will continue to move at the same speed and direction
What happens to a material when a compression force is applied to it? 
It deforms
What happens to a material when a tension force is applied to it? 
It stretches or deforms
What will happen to a material when it reaches it's elastic limit? 
It will break or permanently deform
How does pressure change with depth in water and why does this happen? 
The deeper you go, the higher the pressure. This is because as you swim deeper there is more water pushing down on you
How does an increase in temperature affect the pressure of a gas in a container? 
The pressure increases as the temperature increases because the particles are moving faster, which means that there are more particles hitting an object which increases the pressure
Draw a smart triangle for pressure, force and area. Include units? 
Top- Force (N)
Right- Pressure (N/m2 or P)
Left- Area (m2)
Name the device used to measure a force?
Newton meter
What are the units for a force? 
Newtons (N)
Draw a smart triangle for density, mass and volume. Include units? 
Top- mass (kg)
Right- density (kg/m3)
Left- volume (m3)
What is upthrust? 
Upthrust is a displacement force that is created by displacing an amount of a fluid, which results in a counter upward force. This is Upthrust