Equations of Motion (Grade 10 NSC Matric Physical Sciences): Quizzes

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Equations of Motion
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Under what conditions do the equations of motion apply?

Constant acceleration only

What is the SI unit for acceleration (aa)?

m⋅s−2m·s^{-2}

Which equation connects velocities and displacement without involving time?

vf2=vi2+2aΔxv_f^2 = v_i^2 + 2a\Delta x

How many known quantities are needed to find an unknown using motion equations?

Three

Which equation calculates displacement using the average of initial and final velocities?

Δx=(vi+vf)t2\Delta x = \frac{(v_i + v_f)t}{2}

A car with vi=10v_i=10 m⋅s−1m·s^{-1} covers 725 m in 10 s. What is its acceleration?

12.512.5 m⋅s−2m·s^{-2}

A motorcycle from rest has a=8a=8 m⋅s−2m·s^{-2} for 4 s. What is its final velocity?

3232 m⋅s−1m·s^{-1}

If a motorcycle covers 64 m in 4 s, what distance does it cover in 2 s (half the time)?

16 m

What two phases make up total stopping distance in the truck example?

Reaction time and braking

What is the first step in the problem-solving strategy for motion equations?

Identify and write down given quantities

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