AP Physics C Mechanics: Final Review

A displacement vector has components x=9 m, y=12 m. What is its magnitude?

• 21 m

• 15 m

• 10 m

• 13 m

If a car moves 100 m at 30° north of east, what is the x-component of the displacement?

• 50 m

• 87 m

• 71 m

• 60 m

An object’s velocity changes from 10 m/s to 30 m/s in 4 s. What is the average acceleration?

• 10 m/s²

• 8 m/s²

• 5 m/s²

• 4 m/s²

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If an object travels 80 m in 5 s with uniform acceleration, starting from rest, what is the acceleration?

• 6.4 m/s²

• 8.0 m/s²

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A car decelerates uniformly from 25 m/s to 5 m/s over 5 s. What distance does it travel?

• 75 m

• 100 m

• 50 m

• 60 m

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A 5 kg mass is pulled across a frictionless surface with a force of 25 N. What is the acceleration?

• 2 m/s²

• 4 m/s²

• 5 m/s²

• 6 m/s²

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A 6 kg object is pushed with 20 N. If μ_k = 0.2, what is the net force?

• 6.24 N

• 10 N

• 5.6 N

• 7.6 N

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A 10 N force acts on a 3 kg box. What is the acceleration?

• 3.3 m/s²

• 2.5 m/s²

• 4.0 m/s²

• 5.0 m/s²

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What is the normal force on a 10 kg block sitting on a flat surface?

• 10 N

• 98 N

• 9.8 N

• 100 N

A force of 15 N is applied at an angle of 60° to the horizontal. What is the horizontal component?

• 7.5 N

• 12.99 N

• 13.0 N

• 9.0 N

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