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1. The problem statement, all variables and given/known data

A ball is shot vertically upward from the surface of another planet.

A plot of y versus t for the ball is shown in the figure below, where y is the height of the ball above its starting point and t = 0 at the instance the ball is shot.

The figure’s vertical scale is set by ys = 30.0 m.

(a) Write expressions for the displacement and velocity of the ball as functions of time.

(b) What is the magnitude of the free-fall acceleration on the planet?

(c) What is the magnitude of the initial velocity of the ball?

~I've attatched a pic of the graph.

2. Relevant equations

I have to get the acceleration.

3. The attempt at a solution

a.) I need help on how to derive a equation from that graph and I don't know what the ys= 30m scale is that they describe.

I do know that since it is x vs. t graph I can get the v from that.

b.) would I solve the equation I derive or use another equation for getting the acceration due to gravity for this? I don't know if I get that from a equation that I derive.

~Thanks~

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# Homework Help: Acceleration of free falling object on another planet

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