410 likes | 525 Views
Do Now!. Last lesson. Speed investigation. Today’s lesson. Interpreting distance-time and speed-time graphs. Distance against time graphs. distance. time. No movement?. distance. time. No movement. distance. time. Constant speed?. distance. time. Constant speed. distance. time.
E N D
Last lesson Speed investigation
Today’s lesson • Interpreting distance-time and speed-time graphs
Distance against time graphs distance time
No movement? distance time
No movement distance time
Constant speed? distance time
Constant speed distance time
Constant speed distance The gradient of this graph gives the speed time
Constant speed How would the graph look different for a faster constant speed? distance time
Constant speed fast distance time
Constant speed fast How would the graph look different for a slower constant speed? distance time
Constant speed fast distance slow time
Getting faster? (accelerating) distance time
Getting faster distance time
Examples distance time
A car accelerating from stop and then hitting a wall distance time
A car accelerating from stop and then hitting a wall distance time
Speed against time graphs speed time
No movement? speed time
No movement speed time
Constant speed? speed time
Constant speed speed time
Constant speed How would the graph look different for a faster constant speed? speed time
Constant speed speed fast time
Constant speed How would the graph look different for a slower constant speed? speed fast time
Constant speed speed fast slow time
Getting faster? (accelerating) speed time
Getting faster? (accelerating) speed Constant acceleration time
Getting faster? (accelerating) speed The area under the graph gives the distance travelled time
Example: speed time
A dog falling from a tall building (no air resistance) speed time
A dog falling from a tall building (no air resistance) speed time
A dog falling from a tall building (no air resistance) speed Area = height of building time
distance speed time time Be careful!
distance speed time time No movement
distance speed time time Constant speed Area = distance travelled
distance speed time time Constant acceleration Area = distance travelled
Investigating rolling balls! • Prediction • Table of results (Mass, circumference or diameter, Distance, time (measured several times), speed) • Suitable graph • Conclusion • Evaluation