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when maggie applies the brakes to her car, it slows uniformly from 15.0m/s to 0.0m/s in 2.50s. How many meters before a stop sign must she apply her brakes inorder to stop at the sign |
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Answer» Find the ACCELERATION using: v = u + a t
∴ 0 = 15 + ( a × 2.5 )
∴ a = − 6 m/s 2
Now USE: s = u t + 1 2 a t 2
∴ s = 15 × 2.5 − 0.5 × 6 × 2.5 2
s = 18.75 m please mark it as a BRAINLIST answer |
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