Year 9 Science · Unit 4 · Lesson 12
Foundation Worksheet
Learning Goals
Match each formula to what it calculates
Draw a line connecting each formula to its correct description. Or write the matching letter next to each formula.
| Formula | Your answer | What it calculates |
|---|---|---|
| v = d ÷ t | A. The time taken to cover a known distance at a known speed | |
| d = v × t | B. The distance covered when speed and time are both known | |
| t = d ÷ v | C. The speed of an object when distance and time are both known |
Calculate the missing values
Use the speed formula to find the missing value in each row. Show your working in the 'Your answer' column.
| Speed (v) | Distance (d) | Time (t) | Your answer (with working) |
|---|---|---|---|
| 10 m/s | ? | 5 s | |
| ? | 150 m | 30 s | |
| 25 m/s | 500 m | ? | |
| 60 km/h | ? | 2 h |
True or False? Fix the false ones
Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.
Speed is measured in Newtons.
Correct it:
90 km/h is equal to 25 m/s.
Correct it:
Average speed for a whole journey equals the speed at the midpoint of the journey.
Correct it:
To convert km/h to m/s, you divide by 3.6.
Correct it:
1. A car travels 180 km in 2 hours. Calculate its average speed in km/h, then convert your answer to m/s. Show all working.
2. What is the difference between average speed and instantaneous speed? Give one example of a device that measures each type.
Wrap Up
In one sentence, what was the main idea of this lesson?