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(a) A tape attached to an accelerating trolley passes through a ticker timer that makes dots on it at a frequency of 50Hz. The ticker timer makes 10 dots on a 10 cm long tape such that; the distance a between the first two dots is 0.5cm and the distance
b between the last two dots is 1.5cm.
(i) Determine the velocity of the trolley at: (I) Distance a (II) Distance b (ii) Determine the acceleration of the trolley.
(b) State with a reason what would be observed on the spacing between the dots on the tape when the trolley is made to move on a horizontal surface.