F = ma - Vector Notation (AQA A-Level Mathematics): Quizzes

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F = ma - Vector Notation
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What is Newton's second law of motion in vector notation?

F=ma\mathbf{F} = m\mathbf{a}

What is the unit of force in Newton's second law?

Newtons (N)

What does it mean that force and acceleration are vector quantities?

They have magnitude and direction

How does the direction of F\mathbf{F} relate to a\mathbf{a}?

Same direction

What is the unit of acceleration?

metres per second squared (m/s²)

In 2D, what is the component equation along the x-axis?

Fx=maxF_x = m a_x

In 2D, what is the component equation along the y-axis?

Fy=mayF_y = m a_y

How many separate equations result in 3D?

Three

A 5 kg object has forces 10i^10\hat{i} N and 20j^20\hat{j} N. Find a\mathbf{a}.

2i^+4j^2\hat{i} + 4\hat{j} m/s²

How is net force calculated from multiple forces?

Add force vectors

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