Question

EXERCISE You are traveling along an interstate highway at 35.0 m/s (about 79 mph) when a truck stops suddenly in front of you. You immediately apply your brakes and cut your speed in half after 5.0 s. Hint (a) What was your acceleration (in m/s2), assuming it was constant? (Assume you are initially traveling in the positive direction. Indicate the direction with the sign of your answer.) -3.5 m/s2 (b) How long (in s) did it take you to stop from the time you started to apply the brakes? 5 That would be the time if the vehicle came to a complete stop in 5.0 s, but it only reduces its speed to half in that time. s (c) What was your stopping distance in m)? 41.25 x m

Answer 1

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Sola) aces 35 35 : -35 X5 a= -3.5 ml? using the can v² u²ga8 v=o v. u²= {ad I by eq" » D: 175 m. v=u-at 7 ta u 5) toys » ta lo sec.

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