A car is moving with a velocity of \( 30 \mathrm{~m} / \mathrm{s} \). The driver applied brake f...

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A car is moving with a velocity of \( 30 \mathrm{~m} / \mathrm{s} \). The driver applied brake for 5 seconds to bring it down to zero.
\( \mathrm{P} \)
What is the average acceleration?
W
(1) \( -5 \mathrm{~m} / \mathrm{s}^{2} \)
(2) \( 6 \mathrm{~m} / \mathrm{s}^{2} \)
(3) \( -6 \mathrm{~m} / \mathrm{s}^{2} \)
(4) ZERO
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