Take a look at the video at this link: https://www.youtube.com/watch?v=hZxCEkGk6

Question

Take a look at the video at this link: https://www.youtube.com/watch?v=hZxCEkGk6HI Ignore air resistance, and consider the time from just after the release until just before impact. What is the acceleration of the piano (magnitude and direction)

(a) just after release, while the piano is travelling upwards?

(b) just before impact with the ground?

(c) right at the top of its trajectory, when its vertical velocity is zero? (You can

1. Ignore air resistance, and consider the time from just after the release until just before impact. What is the acceleration of the piano (magnitude and direction) 1.(a) just after release, while the piano is travelling upwards? 2.(b) just before impact with the ground? 3.(c) right at the top of its trajectory, when its vertical velocity is zero?

Explanation / Answer

The acceleration is due to gravity once released, so it will always be 9.8m/s2 downward. That is the answer for all three parts.

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