The car takes 2.41 seconds to reach a velocity of 85 km/h
Explanation:
If the car is moving along a vertical cliff, it means that its motion is a free fall motion, which is a uniformly accelerated motion. Therefore, we can use the following suvat equation:
![v=u+at](https://tex.z-dn.net/?f=v%3Du%2Bat)
where:
v is the final velocity
u is the initial velocity
is the acceleration of gravity
t is the time
For the car in this problem:
u = 0 is the initial velocity
is the final velocity
Solving for t, we find the time the car needs to reach this velocity:
![t=\frac{v-u}{a}=\frac{23.6-0}{9.8}=2.41 s](https://tex.z-dn.net/?f=t%3D%5Cfrac%7Bv-u%7D%7Ba%7D%3D%5Cfrac%7B23.6-0%7D%7B9.8%7D%3D2.41%20s)
Learn more about free fall motion here:
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