3.1.1 kinematics

Question 1

define displacement

Answer 1

• distance travelled in a particular direction

- vector with magnitude and direction

Question 2

define instantaneous speed

Answer 2

the speed at the moment it is measured (speed over an infinitesimal interval of time)

Question 3

define average speed

Answer 3

rate of change in distance calculated over a complete journey

Question 4

define velocity

Answer 4

vector quantity equal to rate of change of velocity

Question 5

define acceleration

Answer 5

the rate of change of velocity VECTOR quantity

Question 6

on displacement time graphs what is represented by the gradient?

Answer 6

velocity

Question 7

on velocity time graphs what is represented by the gradient?

Answer 7

acceleration

Question 8

on velocity-time graphs what is the area under the graph?

Answer 8

displacement

count squares for non-linear graphs and use shapes for linear graphs like triangle etc

Question 9

what do data loggers do?

Answer 9

they measure speed and store that data over time.

can be used to find instantaneous speed