IB Physics SL A.2.19 Newton’s Second Law Applications

Practise applying F=ma and momentum change to connected bodies, elevators, rockets, drag and accelerating systems.

Exam points

Apply F=ma and momentum change to connected bodies, elevators and rockets.
Analyse acceleration, drag and resistive-force data from graphs and experiments.

[Maximum number: 1]

The diagram shows two isolated electrons, X and Y , initially at rest in a vacuum. The initial separation of the electrons is 5.0 mm . The electrons subsequently move apart in the directions shown.

Figure for Question A.2.19—Newton’s second law forms question 1 — IB Physics SL

Calculate the initial acceleration of one electron due to the force in (c)(i).

$1.0 \times 10^{7} \mathrm{~ms}^{-2}\left(9.9 \times 10^{6} \mathrm{~ms}^{-2}\right.$ if $9 \times 10^{-24} \mathrm{~N}$ used );

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A.2.19—Newton’s second law forms question 1