Question

a stone falls from rest from the top of a high tower in one second.Ignore air resistance

Answer 1

Answer:

When air resistance acts, acceleration during a fall will be less than g because air resistance affects the motion of the falling objects by slowing it down. Air resistance depends on two important factors - the speed of the object and its surface area. Increasing the surface area of an object decreases its speed

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Answer 2

Find the kinematics equation that matches the question that is being asked. In this case, it is:

d = vt + 1/2(at^2)

Since the initial velocity of the object is zero, v would be zero. We also have the time and acceleration.

d = (0)(1) + 1/2[(10)(1)^2]

d = 1/2(10)

d = 5m

So the displacement of the object is 5 meters. This equation can't be used for all questions. There are more equations for different scenarios. Be sure to practice using the other ones as well.

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