Question

A car starts from rest at a traffic light and accelerates to a velocity of 18 m/s over a distance of 340 m. Which equation would allow you to determine the car's acceleration? (AKS 1c)

Question 8 options:

vf = vi + at


d = vit + 1/2 at2


d = 1/2 (vf + vi) t


vf2 = vi2 + 2ad

Answers

Answer
A subway train travels at 15 m/s. Every 80 seconds it passes a security camera. How far apart are the security cameras? (AKS 1a)

Question 7 options:

5.33 m


80 m


0.19 m


1200 m
Answered by GPT 3.5
The correct equation that would allow you to determine the car's acceleration is:

vf^2 = vi^2 + 2ad
Answered by GPT 3.5
To determine the distance between the security cameras, we need to find the equation that relates velocity, time, and distance. The equation that satisfies this condition is:

d = vt

Where:
d is the distance traveled (unknown)
v is the velocity of the subway train (15 m/s)
t is the time it takes to pass a security camera (80 seconds)

Substituting the known values into the equation:

d = 15 m/s * 80 s

Simplifying the equation:

d = 1200 m

Therefore, the distance between the security cameras is 1200 meters.

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