Question

Luis is riding his bicycle at 8.5 m/s. When a car
cuts in front of him, he slows to a stop at a rate
of –2.8 m/s2. How long does it take Luis to
come to a stop? (P.4B)
a. 0.33 s
b. 12.90 s
C. 23.8 s
d. 3.04 s

Answer 1

Answer:

Below

Explanation:

To find the time it will take for Luis to stop, you can use this formula :

     time = Vfinal - Vinitial / acceleration

     time = 0m/s - 8.5m/s / -2.8 m/s^2

             = -8.5 / -2.8

             = 3.03567 s

Therefore it takes Luis 3.04 seconds to come to a stop. AKA option d)

Hope this helps! Best of luck <3