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3 kgApplied force3 kgApplied force

A 15 N force acts on a 3 kg block. The surface is smooth.

Find the acceleration.

[2 marks]
a = F/m. 15/3 = 5 m/s².
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The water becomes shallower. Describe how wave speed changes if the ripple generator’s frequency stays constant.

1 / 2marks
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  1. 1

    Compare the water depths

    The water becomes shallower.

  2. 2

    Link depth to wave speed

    Shallower water makes waves travel more slowly.

  3. 3

    Use the wave equation

    v = fλ

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Your answer
Add F = ma1 / 2
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Newton’s second lawPractise F = ma
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4 kg20 NFind the acceleration.

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