1a
6 marks
6 marksA student released a ping pong ball in front of a metre rule and used a phone camera to record the motion of the ball as it fell. The phone camera captures 60 images per second, which may be played back one image at a time.
The ball was dropped from a height such that it reached its terminal velocity as it passed the metre rule.
i) Explain how the terminal velocity of the ball could be determined using the phone camera recording.
(4)
ii) Explain how a systematic error could affect the value obtained for the terminal velocity.
(2)
1b2 marks
2 marksThis experiment could have been attempted using a stopwatch to measure the time as the ping pong ball fell.
Explain an advantage of using a phone camera rather than a stopwatch.
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. After the collision stone B moves off with velocity