since the car moves, the force needed to move is greater than the frictional forces opposing it
a = 3.17m/s²
If an object is dropped from a tall building and hits the ground 3.0 s later, what is the velocity of the object when it hits th
1 answer:
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Answer:
a) t = 3.01s
b) 15th floor
Explanation:
First we need to know the distance the elevator has descended before the bolt fell.
Now we can calculate the time that passed before both elevator and bolt had the same position:
Solving for t:
t1 = -1.87s t2 = 3.01s
In order to know how the amount of floors, we need the distance the bolt has fallen:
Since every floor is 3m:
Floors = Yb / 3 = 15 floors.