PMT MCQs 4.1 - Force, Energy & Momentum - Physics A-level (AQA)

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[callummcveigh]

for question 2, i approchaed it as work done = force times distance where force is =ma and a=v/t so overall it would be m*v*d/t where d/t is v so m *v*v =mv2, i dont understand how this isnt correct

[safwaanchowdhury]

For question 25, i don't understand how we would know that the line will be increasing non linearly 24:45

[zaynbye]

you didnt answer Q4, the answer is C as it asks for the centre of mass.

[secretlycreated]

For no. 8 and 9 why did you say that the air resistance is negligible for 8 whilist saying it is not negligible in 9.