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

Answer 1

The correct equation that would allow you to determine the car's acceleration is:

vf^2 = vi^2 + 2ad

Answer 2

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

Answer 3

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.