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How to Measure ANY Cliffs Height with a Rock
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36,368,855 Views • Jul 18, 2024 • Click to toggle off description
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Views : 36,368,855
Genre: Science & Technology
License: Standard YouTube License
Uploaded At Jul 18, 2024 ^^


warning: returnyoutubedislikes may not be accurate, this is just an estiment ehe :3
Rating : 4.942 (23,116/1,580,886 LTDR)

98.56% of the users lieked the video!!
1.44% of the users dislieked the video!!
User score: 97.84- Overwhelmingly Positive

RYD date created : 2024-12-22T03:11:24.977928Z
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3,876 Comments

Top Comments of this video!! :3

@MarkRober

5 months ago

Multiply by 5 for metric!!

14K |

@Manthus12234

5 months ago

Imagine accidentally dropping your phone while trying to press start time on the rock

29K |

@wedogameshere

1 month ago

The equation for gravity is -(g/2)x^2+ vx+h, with g being the gravitational acceleration of whatever body you’re on, v being the initial vertical velocity, and h being the initial height. The gravity of earth is approximately 32 feet per second squared, and the rock took 2.65 seconds to reach ground, and had no initial velocity, meaning the equation is
-16(2.65)^2+h=0, and solve for h
So -16(2.65)^2=-h
The negatives cancel out so
16(2.65)^2=h
So time squared * 16 to find initial height

51 |

@dallinstoddard7445

5 months ago

Instructions unclear, I dropped my phone and pressed start on my rock

16K |

@SeanPolitics

4 months ago

The formula is s=ut+1/2at^2.

Since he was holding it still and dropped it with not additional force, u is 0 m/s so the formula becomes s=1/2at^2.

t^2 is the time in seconds multiplied by itself. 1/2at^2 is half of the acceleration due to gravity on earth (32 f/s = 16 or 9.8 m/s = about 5).

If you multiply those values together you get s which stands for displacement - in this case the height which the rock fell.

The mass of the object is irrelevant for this formula although technically it doesn’t account for air resistance, but that is negligible.

1.4K |

@Marleys4

1 month ago

Instructions unclear, I dropped the phone, pressed myself, and became the rock

670 |

@Hazard-10

4 months ago

Metric:
(Time x Time) x 5
Eg. (2.65 x 2.65) x 5 = 35 metres

1.4K |

@luccasuarez5516

1 month ago

Df=Vi • t + 1/2A T squared
Df=0•T+4.9T squared
Df=4.9•2.65 squared
Df=34.4 meters

This is neglecting air resistance and is a more complete answer

36 |

@Alexei-i9u

4 months ago

Thanks a lot! That changed my life 😊

1 |

@CyberNova_x11

4 months ago

S = ut + 1/2 at²
S = 0 + 0.5×10×2.65²
S = 5 × 7.02
S = 35.10 meter
S = 35.1 × 3.28 feet
S ≈ 115.128 feet

71 |

@HibiscusPaperDragons

5 months ago

“I’m about to jump if this bridge”
Me: still not crazier than making a heist for squirrels.

418 |

@Nuhuhdjdbdh

1 month ago

“Oh I can’t breathe” I CANT BREAAATHHEREE

1 |

@cheesejoe222

4 months ago

Mark has INSANE dad lore

236 |

@ZackSmith-nk1et

5 months ago

He forgot to account for the 0.24 second delay (which is the average human reaction time) which would put it at 92 feet deep. Since the drop is so short it’s hard to be accurate; the longer the drop time the more accurate this calculation becomes.

2.4K |

@DatDiamondPick

1 month ago

Instructions unclear. The rock pressed start and I threw myself off the bridge.

11 |

@notdelusionalcowboysfan

5 months ago

Mark saying “I’m about to jump off this bridge” is surprisingly not the craziest thing he’s said

966 |

@RizzyCatPTSD

5 months ago

Bro has the slowest reaction time ever 😭😭

286 |

@Pilot_Gundam_31

2 months ago

The song brought my childhood back😭

|

@etr1nox9

5 months ago

H= ut+1/2at²
Simple kinematical equation yet so useful

72 |

@plague_doc5712

5 months ago

The 7 mile hike up to that point is the best

13 |

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