Because when your running any experiment there will always be an experimental error so always be ready for it so that you can correct that error in your experiment
Not really as acceleration is rate of change of velocity therefore zero acceleration would Mean that the velocity is constant
Answer:
+9.8m/s^2
Explanation:
The rate of gravity of the object is constant thriughout the surface of the earth.
For falling object, the rate of gravity is positive since the body is coming down (falling)
The rate of gravity is negative if the body is going up
The constant value for acceleration due to gravity is 9.8m.s^2
Since the object is falling, hence the acceleration due to gravity is positive.
Rate of gravity working on the object will be +9.8m/s^2
The dependent variable was the time and the independent variable was thecars
