Since there is not allowed with links here i will copy and paste the problem


In this project we will study the motion of an object which is fitted with an accelerometer, and it is your task to figure out what physical phenomenon we are observing.
You will need to find the motion from the acceleration of the object, and then interpret
the motion in physical terms.

First, we will guide your intuition by starting with an introductory, analytical exercise.
A car rolling down a hill with an inclindation theta  with the horizon experiences an
acceleration a = g sin(theta) along the surface of the hill. Here g = 9:81 m/s2 is the
acceleration of gravity. The car is released from rest at the time t = t0 = 0 s.


a: Sketch a motion diagram of the motion of the car.

b: Find the position s and the velocity v of the car along the hill after a time t.


I cant determine the acceleration because of the unknown

theta