A pebble, released at rest from a canal bridge, took 0.9 seconds to hit the water. Calculate:
AS Level physics accelaration question
- 05-10-2016 16:31
- 05-10-2016 16:34
A) The distance it fell before hitting the water and B) its speed just before hitting the water.
Done part A: distance=0.5*gravity*time^2
Not sure how to do part B? Any help appreciated?
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- 05-10-2016 19:43
Use the suvat equation v = u + at.
You have initial velocity (0ms-1), the time and the acceleration (g=9.81ms-2)
Hope this helps.
- 05-10-2016 20:22