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## Homework Statement

So i have this lab where I am supposed to push a car up an inclined ramp. I record the time it takes for the object to reachest the highest point on the inclined ramp before it goes back down. I am supposed to create a position vs time graph, velocity vs time graph, and acceleration vs time graph.

Then I have to use the equations for constant acceleration in order to find velocity, acceleration, and distance at certain points.

## Homework Equations

## The Attempt at a Solution

I understand how to use the equations to find the unknown variables, but I cannot conceptualize what the initial velocity of the object would be especially when time=0. I dont know if the velocity is 0 since the object was a rest before I pushed it or if I am instead supposed to use the positive velocity right after the moment I pushed the object. So if I make a velocity vs time graph from the position vs time graph that is a parabola concaving down, what is the velocity of the object at t=0. Is it at rest or there is supposed to be a velocity at time=0. I dont understand how I can even find the velocity at t=0. How can I use a tangent line when t=0?

I am also supposed to find the constant acceleration but I'm not even sure what my initial velocity is.

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