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Do Now!. Today’s lesson. Interpreting distance-time and speed-time graphs. A reminder. A reminder. Average speed = distance travelled time taken. d. t. S. x. Distance against time graphs. distance. time. Quietly and sensibly!. Let’s go on the corridor!.
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Today’s lesson • Interpreting distance-time and speed-time graphs
A reminder Average speed = distance travelled time taken d t S x
Distance against time graphs distance time
Quietly and sensibly! Let’s go on the corridor! You’ll need a pencil and your books
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 (walking to Physics)? distance time
Constant speed fast distance time
Constant speed fast How would the graph look different for a slower constant speed (walking to French)? distance time
Constant speed fast distance slow time
Constant speed fast The gradient of the graph gives the speed distance slow time
Constant speed distance Δy Gradient = Δy/Δx Δx time
Quietly and sensibly! Let’s go on the corridor! You’ll need a pencil and your books
Do now! Can you read what Mr Porter has written in your book and then finish the questions you did last lesson?
Getting faster? (accelerating) distance time
Getting faster (accelerating) 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 Let’s try a simulation distance time
Speed against time graphs speed 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 gradient of this graph gives the acceleration time
Getting faster? (accelerating) v The gradient of this graph gives the acceleration speed a = v – u t (v= final speed, u = initial speed) u 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 gradient = speed Area under graph = distance travelled
distance speed time time Constant acceleration Gradient = acceleration = a = (v-u)/t Area under graph = distance travelled
