Problems 1 and 2 are in the unit \"frames\" and there are 24 frames per second.

Question

Problems 1 and 2 are in the unit "frames" and there are 24 frames per second. I need help with the method/equation of problem 4.

Assuming constant acceleration, at what rate is the shuttle accelerating?

Our goal is to use this video to measure the acceleration of the space shuttle Atlantis as it moves the first 78 meters after liftoff What is the last frame before the shuttle begins to move? (Do not enter units for this answer.) 142 At what frame has the shuttle traveled 78 meters? (Do not enter units for this answer.) 266 What is the elapsed time? 5.25 s Assuming constant acceleration, at what rate is the shuttle accelerating? 15.7 m/s 2X If the shuttle continued to move with this acceleration, what speed would it reach 65 s after launch? If the shuttle traveled directly upwards, what would its altitude be at 65 s?

Explanation / Answer

I think some extra information should be attached with this question, but then also I am solving it with the help of first two question.
It will be appreciated if you attached complete information if any.
As it is mentioned that the last frame is 142 when shuttle start move and it completes its distance i.e 78m when the frame number is 266 .
therefore the total no. of frame = 266 - 142 = 124
Since it is given that the frame is 24 per second therefore time to get 124 frames
time = 124/24 = 5.167 seconds
acceleration = (24*78/124)/5.167 = 2.9217 m/s2

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