I know I'm a sign nut.

[Nat67]

Only if landing on your HEAD!!!

 

[TURBO200R4]

An object in free fall(without any air resistance )near the earths surface has a quarter mile time of 9.06 seconds and a speed of 198.7 mph

that would be like running your rocket through the quarter mile with a brick wall at the end.

 

[Nat67]

that would be like running your rocket through the quarter mile with a brick wall at the end.

Might put a dink in the wheel ?

 

[Ishrub]

An object in free fall(without any air resistance )near the earths surface has a quarter mile time of 9.06 seconds and a speed of 198.7 mph

This must be the best titled calculator I have ever seen!

The Splat Calculator - A Free Fall Calculator

The Splat Calculator - A Free Fall Calculator

If it was me jumping off that 100' (30.48 meter) bridge it would be a very BIG splat.

Falling Parameters

• 
  
  
  • Height in meters
  • Mass in kg

Speed at impact: 24.44 m/s

• or 87.99 km/h ( 54.68 mph )

• Time until impact: 2.49 s

• Energy at impact: 47792.64 joules

• 
  

So @1olbull takes the biscuit

Very doubtful one would survive as a 100 foot fall places one at about 55 mph at impact!

 

[cusso ken]

Where near the earth surface is there no air resistance?
Free-fall speeds approaching 200 mph can be attained in a head first, arms to the rear dive.
A "normal" fall terminal velocity is around 120 mph.

The Grand Slam earthquake bombs developed by Barnes Wallace during WW2 to destroy massively reinforced German bunkers and tunnels when dropped from 25000Ft reached a speed of 320 m/s or 715mph or close to the half muzzle velocity of a 105mm howitzer and penetrated the earth up to 130 Ft
incidentally a feather dropped in a perfect vacuum falls at the same speed as a lead shot

 

[Rocket Scientist]

that would be like running your rocket through the quarter mile with a brick wall at the end.

Kids ! Don't try this at home

 

[Steel]

Can I try it at somebody else's house?

 

[1olbull]

The Grand Slam earthquake bombs developed by Barnes Wallace during WW2 to destroy massively reinforced German bunkers and tunnels when dropped from 25000Ft reached a speed of 320 m/s or 715mph or close to the half muzzle velocity of a 105mm howitzer and penetrated the earth up to 130 Ft
incidentally a feather dropped in a perfect vacuum falls at the same speed as a lead shot

Everyone knows this, M8!
The old comparo i always liked was:
A rifle at bench rest, barrel at table edge, is fired.
At the instant the bullet leaves the barrel another identical bullet is pushed off the table edge.
Which hits the ground first?

 

[cusso ken]

Everyone knows this, M8!
The old comparo i always liked was:
A rifle at bench rest, barrel at table edge, is fired.
At the instant the bullet leaves the barrel another identical bullet is pushed off the table edge.
Which hits the ground first?

If the Rifle is perfectly level and the surface in front of rifle is perfectly level they will hit the ground simultaneously, if the projectile is dropped vertically at the same time as the projectile leaves the barrel gravity pulls them to earth at the same time, trajectory and elevation of a artillery piece was basic training for a Gunner in 1969

 

[mr hunt]

If I slide one beer down a PVC tube with the end level with the table edge and pushed another can off the edge at the same time as the first can left the PVC tube, assuming all surfaces were even and my mates were watching, I'd get punched in the face for wasting beer