Asked by Han
A ball rolls horizontally of the top of a stairway with a speed of 3 m/s. The steps are 20 cm high and 23 cm wide. Wich step does the ball hit first?
Answers
Answered by
oobleck
To hit the nth step, see how long it has to fall:
4.9t^2 = .20n
t^2 = 0.653n
Now, to land on the nth step, we also need
3t < .23n
See what you can do with that
4.9t^2 = .20n
t^2 = 0.653n
Now, to land on the nth step, we also need
3t < .23n
See what you can do with that
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