Travelled with Uniform Acceleration

If a rocket moves in a straight line with uniform acceleration a and the velocity increases from a value m to a value v in a time, f, then from the dehnition of acceleration  

Now if a rocket with a velocity u accelerates with a uniform acceleration a, for a time t and attains a velocity v, the distance v travelled by the rocket in the time t is given by 

From which it can be seen that a rocket with an initial velocity of 25 ms and a uniform acceleration of 10 ms with a flight time of 3 seconds will cover a distance of 120 m in vertical flight i.e. 

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Shock Tube as Vaccine Delivery System A unique form of powder delivery system, a biolistic system, has been developed [19]. This novel technology accelerates microparticles by a gas flow behind a traveling shockwave, so that they can attain sufficient momentum to penetrate the skin and thus achieve a pharmacological effect. One of the most recent developments is a mouse biolistic system, used in immunological studies. These studies require powdered vaccine to be delivered into the epidermis of the mouse with a narrow and highly controllable velocity distribution and a uniform spatial distribution. The preliminary results demonstrate the overall capability of a newly designed supersonic nozzle to deliver the particles to the skin targets with a more uniform velocity and spatial distribution. CTD has been utihzed to characterize the complete operation of a prototype mouse biolistic system. 

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