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ACG Schools logo
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British Model College logo
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GEMS Education logo
GEMS Education
St. Xavier's College logo
St. Xavier's College
Trinity International logo
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Thames British School logo
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The answer is right. The mark is zero.

CIE doesn't grade answers. It grades working.

IGCSE Physics·0625/42·May/June 2023
3(a)

A car of mass 1200 kg accelerates from rest to 15 m/s in 10 seconds. Calculate the resultant force acting on the car.

[2]
Generic AI0/2

The resultant force acting on the car is 1800 N. This is because when a car accelerates, the net force can be calculated using Newton's second law of motion, which states that force equals mass times acceleration. Since the car goes from 0 to 15 m/s in 10 seconds, the acceleration is 1.5 m/s², and multiplying by the mass gives us 1800 Newtons.

Correct answer, but no working shown. CIE awards 0 marks without substitution steps.

ExamPalExamPal
2/2
Find acceleration

a=vut=15010=1.5 m/s2a = \frac{v - u}{t} = \frac{15 - 0}{10} = 1.5 \text{ m/s}^2

Calculate force

F=ma=1200×1.5=1800 NF = ma = 1200 \times 1.5 = 1800 \text{ N}

Examiner tip: Always show substitution separately. Writing just "F = 1800 N" without working loses the first mark.

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Q3(a) · Force · [2]

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