A model rocket is launched straight upward with an initial speed of 40.0 m/s. It accelerates with a constant upward acceleration of 1.00 m/s2 until its engines stop at an altitude of 170 m.
a) What is the maximum height reached by the rocket?
(b) How long after lift-off does the rocket reach its maximum height?
(c) How long is the rocket in the air?
Posted in Model Rockets
Tagged Acceleration, altitude, initial speed, launch, model, model rocket, question, Rocket, rocket launch, speed
Does any one have any idea what types (diesel, steam etc.) or model #’s/types might have been used in the Newfoundland railway trains when it was operational back in the early 1900′s?
Posted in Model Trains
Tagged diesel, Engines, idea, model, newfoundland, steam, trains, Types
One of those burning questions that dog me throughout lifes journey.
Posted in Model Trains
Tagged burning, burning questions, difference, dog, journey, lifes journey, model, scale, scale model trains, Whats
Contrary to what a lot of people will think I am not using this to make gun powder. I am a model rocket hobbyist and am interested in making sugar rockets. These require potassium nitrate which is getting harder to come by these days plus it’s cheaper this way. I found someone selling info on this but once again I would like to keep the cost of making this as low as possible. Thanks.
Posted in Model Rockets
Tagged contrary, gun, gun powder, hobbyist, home, kno, lot, make, model, model rocket, Nitrate, Potassium, potassium nitrate kno3, powder, Rocket, Rockets
I’ve noticed model warship combat more than a year ago. It looks like a lot of fun, but it’s not practical in my country beacuse of the BB guns. I’m 99 per cent sure that authorities over here would do more than just frown at people running model battleships that fire BBs. So I came up with a system that uses water cannons (or water pistols, your call) and water detectors to make and register hits. After enough targets on the ship are hit, the system will be able to show a “disabled” result – I’m thinking about raising a white flag, or maybe disabling the motor altogether. Thanks a lot to Rob Wood of Western Warship Combat Club for allowing me to use pictures off their website westernwarshipcombat.com .
Video Rating: 5 / 5
MODELO NAVEGABLE A RADIO CONTROL DEL REMOLCADOR SANTANDER, ESCALA 1/35, 1.25 MTS. DE ESLORA, DISEÑADO Y COSTRUIDO POR JOAQUIN SOLANA. VIDEO JOAQUIN SOLANA, ESPEJOS DE POLANCO, MEXICO DF www.jsolana.com.mx
Video Rating: 4 / 5
My friend and I built a 2-stage model rocket using estes engines. The C-6-0 is on bottom and the C-6-7 is stacked about one inch above the other. We are relying on the charge from the C-6-0 that normally sets the parachute off to ignite the C-6-7 just above it. Will it work????? any thoughts??
Posted in Model Rockets
Tagged bottom, charge, Estes, friend, homemade, inch, model, model rocket, parachute, question, Rocket, Stage, stage model
A 500g model rocket is resting horizontally at the top edge of a 40m high wall when it is accidentally bumped. The bump pushes it off the edge with a horizontal speed of 0.5m/s and at the same time causes the engine to ignite. When the engine fires, it exerts a constant 20N horizontal thrust away from the wall.
a) How far from the base of the wall does the rocket land?
b) Describe the trajectory of the rocket while it travels to the ground.
Posted in Model Rockets
Tagged 5m, bump, edge, Engine, engine fires, horizontal, horizontal speed, horizontal thrust, model, model rocket, motion, motion problem, problem, Rocket, speed, top edge, wall
