Newton's First Law of Motion
Demonstration: Car on Inclined Track
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- Air track
- Air track car
- Wooden wedge
- Meter stick
A series of experiments is done with varying
air track inclinations and with the car being released from
one end of the track with the same initial speed each time.
The horizontal distance reached is observed to change with
inclination, but the car always stops at the same vertical
height. At zero inclination, the car would have to travel an
infinite distance to reach this same height. Therefore, it
will maintain its motion with a constant speed.