Felipe drives his car at a velocity of 28 m/s. He applies the brake, which slows the vehicle down at a rate of 6.4 m/s2 and caus

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Felipe drives his car at a velocity of 28 m/s. He applies the brake, which slows the vehicle down at a rate of 6.4 m/s2 and caus

es it to slow to a stop. How long does it take for the car to stop? Round your answer to the nearest tenth.

Physics

1 answer:

stiv31 [10] · Answer 1 · 2022-07-11T07:14:09+03:00

Answer:

Explanation:

Use the one-dimensional equation

$v_f=v_0+at$ where v is the final velocity, v0 is the initial velocity, a is the acceleration, and t is the time it takes to reach that final velocity. We are solving for t. Filling in the other values:

0 = 28 + (-6.4)t and

-28 = -6.4t so

t = 4.4 seconds