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## Homework Statement

A remote controlled toy car starts from rest and begins to accelerate in a straight line. The figure below represents "snapshots" of the car's position at equal 0.5 s time intervals. (Assume the positive direction is to the right. Indicate the direction with the sign of your answer.) t=1 s 0.4 m and then t=1.5 s 0.9m and then t=2 s 1.6 m.

Using data from

*t*= 1.0 s to

*t*= 2.0 s, what is the car's acceleration at

*t*= 1.5 s?

## Homework Equations

I know average velocity equals Delta v/Delta t but I'm confused when it's about a specific point.

## The Attempt at a Solution

I tried 1.4 (Vf) - 1(Vi)/(2-1) and got 0.4 m/s which was wrong