Falling object 1

Classical Mechanics Level 1

An object with mass m kg falls from 100m above the ground. what is the maximum velocity gained by the object?

Take g = 9.8 m / s 2 g = 9.8 m/s^2 .


The answer is 44.29.

Black Bird by Black Bird , 17, Bangladesh

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2 solutions

Note: If you have spotted a mistake with my math, please reply to this solution

3 Helpful 0 Interesting 0 Brilliant 0 Confused

It is not mentioned there that the initial velocity is zero but I highly appreciate your prediction.

Black Bird - 2 years, 4 months ago

Well, for some falling objects problems, objects start at rest so I assume their initial vertical velocity is zero

A Former Brilliant Member - 2 years, 4 months ago
X X
Feb 10, 2019

m g h = 0.5 m v 2 mgh=0.5mv^2

2 g h = v 2 2gh=v^2

2 × 9.8 × 100 = 1960 = v 2 , v ≈ 44.3 2\times9.8\times100=1960=v^2,v\approx44.3

2 Helpful 0 Interesting 0 Brilliant 0 Confused

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