AP Physics C Mechanics Flashcards: Conservation Of Linear Momentum

Study Conservation Of Linear Momentum in AP Physics C Mechanics with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Determine the impulse for a 3 kg object accelerating from 2 m/s to 5 m/s.

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ANSWER

$J = 9 \, \text{N·s}$ . $J = m\Delta v = 3(5-2) = 9$ N·s.

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AP Physics C Mechanics: Linear Momentum

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What this deck covers

This deck focuses on Conservation Of Linear Momentum, giving you a quick way to review the definitions, rules, and examples that matter most for AP Physics C Mechanics.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 8Practice questions for this set

A firework of mass

3.0\,\text{kg}

moves horizontally at

+4.0\,\text{m/s}

(no air resistance). It explodes into two pieces: piece 1 has mass

1.0\,\text{kg}

and piece 2 has mass

2.0\,\text{kg}

. Immediately after, piece 2 moves at

+1.0\,\text{m/s}

. With external impulse negligible, momentum is conserved:

\vec p_i=(3.0)(+4.0)\hat\imath

and

\vec p_f=(1.0\,\vec v_1+2.0\cdot +1.0\hat\imath)

. Calculate the velocity of piece 1 after the event given the initial conditions.

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