__Velocity and Acceleration__

Demonstrate an understanding of the following as vector quantities:

a) displacement

b) velocity

c) acceleration

d) force

Interpret distance/time graphs including determination of speed from the gradient

Recall that velocity is speed in a stated direction

Use the equation:

speed (m/s) = distance (m) / time (s)

Use the equation:

acceleration (metre per second squared, m/s2) = change in velocity (metre per second, m/s) / time taken (second, s)

Interpret velocity/time graphs to:

a) compare acceleration from gradients qualitatively

b) calculate the acceleration from the gradient (for uniform acceleration only)

c) determine the distance traveled using the area between the graph line and the time axis (for uniform

acceleration only

a) displacement

b) velocity

c) acceleration

d) force

Interpret distance/time graphs including determination of speed from the gradient

Recall that velocity is speed in a stated direction

Use the equation:

speed (m/s) = distance (m) / time (s)

Use the equation:

acceleration (metre per second squared, m/s2) = change in velocity (metre per second, m/s) / time taken (second, s)

Interpret velocity/time graphs to:

a) compare acceleration from gradients qualitatively

b) calculate the acceleration from the gradient (for uniform acceleration only)

c) determine the distance traveled using the area between the graph line and the time axis (for uniform

acceleration only

__Forces__

Draw and interpret a free-body force diagram

Demonstrate an understanding that when two bodies interact, the forces they exert on each other are equal in size and opposite in direction and that these are known as action and reaction forces

Calculate a resultant force using a range of forces (limited to the

resultant of forces acting along a line) including resistive forces

Demonstrate an understanding that if the resultant force acting on a body is zero, it will remain at rest or continue to move at the same velocity

Demonstrate an understanding that if the resultant force acting on a body is not zero, it will accelerate in the direction of the resultant force

Demonstrate an understanding that a resultant force acting on an object produces an acceleration which depends on:

a) the size of the resultant force

b) the mass of the object

Use the equation:

force (newton, N) = mass (kilogram, kg) x acceleration (metre per second squared, m/s2)

F = m x a

Demonstrate an understanding that when two bodies interact, the forces they exert on each other are equal in size and opposite in direction and that these are known as action and reaction forces

Calculate a resultant force using a range of forces (limited to the

resultant of forces acting along a line) including resistive forces

Demonstrate an understanding that if the resultant force acting on a body is zero, it will remain at rest or continue to move at the same velocity

Demonstrate an understanding that if the resultant force acting on a body is not zero, it will accelerate in the direction of the resultant force

Demonstrate an understanding that a resultant force acting on an object produces an acceleration which depends on:

a) the size of the resultant force

b) the mass of the object

Use the equation:

force (newton, N) = mass (kilogram, kg) x acceleration (metre per second squared, m/s2)

F = m x a

__Weight and Terminal Velocity__

Use the equation:

weight (newton, N) = mass (kilogram, kg) x gravitational field strength (newton per kilogram, N/kg)

W = m x g

Investigate the relationship between force, mass and acceleration

Recall that in a vacuum all falling bodies accelerate at the same rate

Demonstrate an understanding that:

a) when an object falls through an atmosphere air resistance increases with increasing speed

b) air resistance increases until it is equal in size to the weight of the falling object

c) when the two forces are balanced, acceleration is zero and terminal velocity is reached

weight (newton, N) = mass (kilogram, kg) x gravitational field strength (newton per kilogram, N/kg)

W = m x g

Investigate the relationship between force, mass and acceleration

Recall that in a vacuum all falling bodies accelerate at the same rate

Demonstrate an understanding that:

a) when an object falls through an atmosphere air resistance increases with increasing speed

b) air resistance increases until it is equal in size to the weight of the falling object

c) when the two forces are balanced, acceleration is zero and terminal velocity is reached