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by LaissezErik on March 6th, 2009
When did Isaac Newton make the three laws of motion?
by Answerbag Staff on May 19th, 2010
| 1 person likes this
Does frictional force acting on an object depend on the amount of force(opposite direction to the friction) applied to the object??
by Inddiggo:)) on June 23rd, 2011
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what will happen if i hit solid ground head first at 11m/s(40kmph)?
by shehzaanvirani on May 13th, 2011
| 3 people like this
By following the Principle of Homogeneity, can we say S directly proportional to t² and t in S=ut +1/2 at² ?
'u' and 'a' are constant
by Asish_J on August 15th, 2011
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please solve this problem
by Ripan on June 16th, 2011
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You're reading What is the fastest speed of any projectile from a firearm or other propulsive source (e.g. volcanic eruption, EM pulse, etc.)?
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Comments
That's a good answer.
IIRC a supernova or a GRB can propel some particles at near-light speed.
by Brian on March 6th, 2009
And that's assuming you consider a projectile something with mass...otherwise I'd say any photon emitter in a vacuum.
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Going the other way--more massive objects--a rail gun can get relatively heavy projectiles moving extremely fast...something around Mach 7 for a 3kg projectile.
by LaissezErik on March 6th, 2009
Nice.
by xprofessor on March 6th, 2009