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 bearing as it falls slowly through a clear, dense liquid. The apparatus in Figure 7 is used to find the average speed of the ball bearing as it falls. (i) Devise an experiment to determine the average speed of the ball bearing as it falls through the liquid. You should include: - any extra apparatus you would use to take measurements - the measurements you would take - how you would calculate the speed.

GCSE Edexcel Physics Speed: 6 Quantities can be either scala

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 bearing... 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

Which of these is a vector quantity?

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Answer

The vector quantity from the options given is B: force. A vector quantity is one that has both magnitude and direction.

Step 2

Devise an experiment to determine the average speed of the ball bearing as it falls through the liquid.

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Answer

To determine the average speed of the ball bearing as it falls through the liquid:

Materials Needed:

A boiling tube filled with the clear dense liquid.
A stopwatch or timer.
A ruler or measuring tape.
A ball bearing.
A marker (to mark the height).

Procedure:

Setup the Apparatus: Fill the boiling tube with the clear dense liquid. Ensure there are no air bubbles.
Measure the Distance: Use the ruler to measure a specific distance (e.g., 30 cm) from the top of the boiling tube to the starting point where the ball bearing will be released. Mark this distance with the marker.
Drop the Ball Bearing: Release the ball bearing from the marked point and simultaneously start the stopwatch.
Record the Time: Stop the timer as soon as the ball bearing reaches the bottom of the measured distance. Record the time taken.
Calculate Speed: Use the formula for speed, which is given by: $ext{Speed} = rac{ ext{Distance}}{ ext{Time}}$ Here, substitute the measured distance and the recorded time into the formula to calculate the average speed of the ball bearing.