be g. This is derived using one of the constant acceleration formula below: t at s = u + 2 1 2 As h is distance travelled, g is acceleration, u is 0 gt h = 2 1 2 2 h t = g 2 y = mx
● The ball bearing is cushioned by a pad at the bottom of the clamp so it does not bounce upwards and cause injury. Notes ● The metre ruler must be kept perpendicular to the ground - you could use a set square to make sure this is the case. ● The tennis ball will experience a large amount of air resistance which may affect your calculation of g, therefore the tennis ball can be swapped out for a ball bearing to improve results. ● Reaction times will hugely affect the recorded times (t), making the results less accurate. Comparing Methods: The second method is easier to carry out and requires less complex equipment, however it will be far less accurate. Therefore, the initial method is better for calculating a more accurate value of g.
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- Fall '18
- Acceleration, Velocity, Ball bearing