When the total mass of the trolley was 1.5 kg, the acceleration of the trolley was 0.62 m/s².
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Calculate the resultant force acting on the trolley.
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Use the equation:
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resultant force = mass × acceleration

The question provides the equation: resultant force = mass × acceleration. It also gives the values: mass = 1.5 kg acceleration = 0.62 m/s² Substitute the values into the equation: Resultant force = 1.5 × 0.62 Resultant force = 0.93 N The unit for force is Newtons (N).