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6. Quantities can be either scalar or vector - Edexcel - GCSE Physics - Question 6 - 2021 - Paper 1
Question 6
6. Quantities can be either scalar or vector. (a) Which of these is a vector quantity? ☐ A mass ☐ B force ☐ C energy ☐ D distance (b) Figure 7 shows a ball bearin... show full transcript
Worked Solution & Example Answer:6. Quantities can be either scalar or vector - Edexcel - GCSE Physics - Question 6 - 2021 - Paper 1
Step 1
Step 2
Devise an experiment to determine the average speed of the ball bearing as it falls through the liquid.
Answer
To determine the average speed of the ball bearing as it falls through the liquid, you can follow these steps:
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Extra Apparatus:
- Stopwatch to measure time.
- Ruler or measuring tape to measure distances.
- Deep measuring cylinder filled with the clear dense liquid.
- Ball bearing of known mass.
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Measurements:
- Measure and record the total distance (depth) the ball bearing will fall within the liquid.
- Use the stopwatch to time how long it takes for the ball bearing to fall from the top to the bottom of the liquid.
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How to Calculate Speed:
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The average speed can be calculated using the formula:
ext{Average Speed} = rac{ ext{Distance}}{ ext{Time}}
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For example, if the distance is 30 cm (0.3 m) and it takes 5 seconds, then:
ext{Average Speed} = rac{0.3 ext{ m}}{5 ext{ s}} = 0.06 ext{ m/s}
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