Change the ____ acting on the trolley by increasing ____ of the runway using wooden blocks. Set up 2 ____ ____ on the runway to measure the ____ speed of the trolley at two different points. Release the ____ down the runway and ____ the time it takes to travel between the two light gates using a ____. Use the equation ____ = change in ____ / time to calculate the acceleration of the trolley. Repeat this for the runway at ____ heights.

ACCELERATION

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