The velocity \( (v) \) of a particle varies with position \( (x) \)...

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The velocity \( (v) \) of a particle varies with position \( (x) \)
P as shown in the graph. Its acceleration when \( x=4 \)

W \( m \) will be
(1) \( -8 \mathrm{~m} / \mathrm{s}^{2} \)
(2) \( 8 \mathrm{~m} / \mathrm{s}^{2} \)
(3) \( 2 \mathrm{~m} / \mathrm{s}^{2} \)
(4) \( -2 \mathrm{~m} / \mathrm{s}^{2} \)
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