Physics: I am traveling at 100 m/s, I hit the brakes and my speed goes down to 50 m/s. It took 30 seconds to slow down. What was my acceleration? A.5 m/s2 B.-5 m/s2 C.1.7 m/s2 D.-1.7 m/s2

I am traveling at 100 m/s, I hit the brakes and my

Ответ:

mckayboyd1

12.02.2022

D. -1.7m/s2

Explanation:

the car starts at 100m/s so this is the initial velocity. It ends at 50m/s so this is the final velocity. it took 30 seconds so the time is 30.

$v_{f}=v_{i}+at$

$a=\frac{\left(v_{f}-v_{i}\right)}{t}$

$a=\ \frac{\left(50-100\right)}{30}$

a=-1.66666666667 $m/s^{2}$

Therefore, the answer is D

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Ответ:

lalalalal5

17.11.2021

Physics

No hablo español bien, pero según el modelo estándar de Big Bang, el universo nació durante un período de inflación que comenzó hace unos 13.800 millones de años.

¡¡espero que esto ayude!!

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I am traveling at 100 m/s, I hit the brakes and my speed goes down to 50 m/s. It took 30 seconds to slow down. What was my acceleration? A.5 m/s2
B.-5 m/s2
C.1.7 m/s2
D.-1.7 m/s2

Ответ:

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