The crossbow was a more effective weapon than the normal bow because . it used a reel, giving more power to the bow string it was held horizontally it shoot a bolt rather than an arrow it could shoot harder and farther all of the above

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Explanation:

The Crossbow bolt has more effect against armour at close range, but it is much slower to reload and has less range. As a mass of weapons the longbow is much more effective. Thus one crossbow is probably the better weapon, but if you had say 100 of each then the longbow is better because they could fire more shots at greater range. Certainly that's what Crecy in 1346 would suggest. The most skilled of the English Longbowmen could fire 8-10 shots a minute: the most skilled of crossbowmen could manage only 1 round every minute: most required a minute and a half to fire each round.

Although both has their strengths, as pointed out above, the reason the Crossbow became popular over the logbow is mainly because the crossbow was so much easier to use: it took years and years to become proficient in the longbow (English people started their training as young boys) while the crossbow could be mastered quickly: it was a matter of point and shoot. It was the considerable experience/practice vs little experience/practice requirements that eventually saw a more widespread use of the crossbow.

v=ir = 3x15 =45 v