This presentation is the property of its rightful owner.
1 / 41

# Do Now! PowerPoint PPT Presentation

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.

Do Now!

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

### Last lesson

Speed investigation

### Today’s lesson

• Interpreting distance-time and speed-time graphs

distance

time

distance

time

distance

time

distance

time

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

fast

distance

time

### Constant speed

fast

How would the graph look different for a slower constant speed?

distance

time

fast

distance

slow

time

distance

time

distance

time

distance

time

distance

time

distance

time

speed

time

speed

time

speed

time

speed

time

speed

time

### Constant speed

How would the graph look different for a faster constant speed?

speed

time

speed

fast

time

### Constant speed

How would the graph look different for a slower constant speed?

speed

fast

time

speed

fast

slow

time

speed

time

### Getting faster? (accelerating)

speed

Constant acceleration

time

### Getting faster? (accelerating)

speed

The area under the graph gives the distance travelled

time

speed

time

speed

time

speed

time

### A dog falling from a tall building (no air resistance)

speed

Area = height of building

time

distance

speed

time

time

distance

speed

time

time

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