If a car rolls gently off a vertical cliff, how long does it take to reach 85 km/h?
1 answer:
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:
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:
Learn more about free fall motion here:
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