Physics 9702/12 — October/November 2019

Cambridge AS Level · Multiple Choice (AS Level) · answer key with instant marking and worked solutions

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Topics Waves · Physical Quantities and Units · Dynamics · Work, Energy and Power · D.C. Circuits · Electric Fields · +6 more

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Q11MPhysical Quantities and UnitsWork, Energy and PowerDynamicsFree sample

A cyclist has a speed of $5\text{ m s}^{-1}$ and a small car has a speed of $12\text{ m s}^{-1}$ .

Which statement does not give a reasonable estimate?

Options

A The kinetic energy of the cyclist is $1 \times 10^{3}\text{ J}$ .
B The kinetic energy of the car is $7 \times 10^{4}\text{ J}$ .
C The momentum of the cyclist is $4 \times 10^{2}\text{ kg m s}^{-1}$ .
D The momentum of the car is $2 \times 10^{5}\text{ kg m s}^{-1}$ .

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