Question

The ticker-time tape below shows a section of a long tape. The dots were made at a frequency of 40Hz.

Determine the acceleration of the trolley pulling the tape 

Answer 1

u=^4.5/_0.025 = 180cm/s, 

v = ^0.3/_0.025 = 12m/s
a= ^v-u/_t
=    ^12-180/_{6 x 0.025}