Acceleration What does the word “acceleration” mean? The change in velocity each second.
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Transcript of Acceleration What does the word “acceleration” mean? The change in velocity each second.
Acceleration
What does the word “acceleration” mean?
The change in velocity each second.
Acceleration
How many speeds ( or “velocities”) would you need to have to work out an acceleration?
2
Acceleration
What words mean “the speed at a moment in time”?
Instantaneous Speed
Acceleration
How did you measure “instantaneous speed”?
Pass an object through a light gate attached to a timer.
Then
“instantaneous speed = object length / time to cut beam”
Power SupplyTimer
X
Light gate
Acceleration
What letter did we use for “initial speed” ?
u
Acceleration
What letter did we use for “final speed” ?
v
Acceleration
What equation did we come up with for acceleration “a” ?
a = (v – u) / t
Measuring Acceleration
TASK SHEET
In your groups design an experiment to measure the acceleration of an object on a slope.
Report on your experiment as a group poster …
TITLE
AIM
METHOD (inc diagram)
MEASUREMENTS
Measuring Acceleration
Report on your experiment as a group poster …
TITLE
AIM
METHOD (inc diagram)
MEASUREMENTS (a few runs for an average)
TABLE OF RESULTS (with correct units!)
CALCULATIONS
CONCLUSION
IMPROVEMENT SUGGESTIONS
Measuring Acceleration Experiment
Timer t 1Timer t 2
Stopwatch
Measurements
Card length =
t1 =
t2 =
Stopwatch, t =
Calculations
u = card length / t1 =
v = card length / t2 =
a = (v – u) / t =
Measuring Acceleration Experiment
Timer t 1Timer t 2
Timer t 3