Ch02 A-level Physics CIE

Rate of change of velocity

Define acceleration

Change in velocity / time

How to calculate acceleration

ms^-2

The units of acceleration

Acceleration

In a velocity-time graph, what does the gradient represent?

Displacement

In a velocity-time graph, what does the area under the line represent?

Displacement

In the 'suvat' equations, what does 's' represent?

Initial velocity

In the 'suvat' equations, what does 'u' represent?

Final velocity

In the 'suvat' equations, what does 'v' represent?

Acceleration

In the 'suvat' equations, what does 'a' represent?

Time

In the 'suvat' equations, what does 't' represent?

Acceleration is constant

The 'suvat' equations only apply when...

v = u+at

State the 'suvat' equation that does not include 's'

s = (u+v)t/2

State the 'suvat' equation that does not include 'a'

Gradient at a point

We draw a tangent to the graph to find the...

True

True or false: horizontal and vertical motion don't affect each other

False

True or false: gravity affects horizontal motion

Component

The word that means the amount of a vector pointing in a certain direction

v cos θ

How to calculate the component of this vector in the x direction

v sin θ

How to calculate the component of this vector in the y direction

a direction to be positive

Before using 'suvat' equations, you must choose...

Vector

Is force a vector or a scalar?

Vector

Is acceleration a vector or a scalar?