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How can heavy objects such as airplanes and spacecrafts travel through the air?
Wiki User
∙ 9y ago
There are four forces that act on an airplane:Thrustwhich works against drag
Lift which works against weight (the force of gravity)
When an airplane's lift is higher than its weight, it can climb and take off. If an airplane's lift can not overcome its weight, it will fall from the sky or not take off at all.
In the case of a spacecraft, if it is being launched with the aid of a rocket, the force of the rocket engines will propel the rocket into space. The propulsion force of the launching vehicle will have to be stronger than its weight in order for it to lift off. If the rocket engine(s) fail or are not generating enough force the rocket will fall or not lift off at all.
Wiki User
∙ 9y ago
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What scientists travel in spacecrafts?
i think astronauts
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Can light travel through translucent objects?
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What can infrared travel through?
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It just doesn't :)
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Sound waves travel only in the air?
No. They travel through water and solid objects also.
What objects does a sound travel through?
Sound can travel through solids, liquids, and gases. In solids, sound travels the fastest due to the close arrangement of particles. In liquids, sound travels at a medium speed, while in gases, it travels slower as the particles are more spread out.
How were airplanes used?
To travel
How does sound travel through solid objects?
Sound travels through solid objects via vibrations. When an object is struck or a sound is produced, it causes the particles in the solid to vibrate, transmitting the sound energy as a wave through the material. The speed of sound in a solid is determined by the material's density and elasticity.
What does not let light through?
There are many materials that light can not travel through which are called opaque objects.
