Scalars and vectors (AQA A-Level Physics): Quizzes

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Scalars and vectors
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What distinguishes a vector from a scalar?

Vectors have magnitude & direction

Which of the following is a vector quantity?

Velocity

Which of the following is a scalar quantity?

Distance

Two forces of 55 N and 1212 N act perpendicularly. What is the magnitude of the resultant?

1313 N

Which method is best for adding vectors at arbitrary angles?

Scale drawing with ruler & protractor

What is the formula for the horizontal component of a vector VV at angle θ\theta?

Vcos⁡θV \cos \theta

What is the formula for the vertical component of a vector VV at angle θ\theta?

Vsin⁡θV \sin \theta

A ball is projected at 1010 m/s at 30∘30^\circ. What is its horizontal component?

8.78.7 m/s

When is an object in equilibrium?

When sum of all forces is zero

How can you show three forces are in equilibrium using a diagram?

Draw a closed triangle

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