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A vehicle at 30 m/s brakes uniformly at 5 m/s² until rest. What is its braking distance?

By /

A) 90 m

B) 45 m

C) 135 m

D) 180 m

Answer: A

Explanation: Use braking distance = initial speed² ÷ (2 × deceleration) for the stated idealized conditions. Substitution gives 30² ÷ (2 × 5) = 90 m.

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