FM23 P22 Q1 Car Measurement and Uncertainty | Feb/March 2023 | Cambridge A Level 9702 Physics

9702/22/F/M/23: (a) Underline all the SI base units in the following list.
(b) A toy car moves in a horizontal straight line. The displacement s of the car is given by the equation, where a is the acceleration of the car and v is its final velocity. State two conditions that apply to the motion of the car in order for the above equation to be valid.

(c) An experiment is performed to determine the acceleration of the car in (b). The following measurements are obtained:
(i) Calculate the acceleration a of the car
(ii) Determine the percentage uncertainty, to two significant figures, in a.
(iii) Use your answers in (c)(i) and (c)(ii) to determine the absolute uncertainty in the calculated value of a.
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