No, our model for the acceleration does not predict that the distance should be proportional to the time. According to our kinematic equation, distance should be proportional to time squared.

The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time. In this example, distance is in metres (m ...

Mark the distance traveled on the ramp each time. Using a longer ramp, how does gravity appear to affect the velocity and acceleration of a marble as it rolls downhill? Extra: Try repeating this ...

In the standard model of cosmology called the Lambda-CDM, it is accounted for by adding a cosmological constant term in Einstein's field equation ... time, we can explain this cosmic acceleration ...