Jaipur asked in Science & MathematicsPhysics · 10 years ago

# How much time does it take a bullet to go 50ft at 500ft/sec?

s=d/t

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• 10 years ago

correct

s=d/t

since s is 500 ft/sec in this case, and d is 50 ft, we get

500 ft/sec = 50 ft/ t

lets solve for t

start by multiplying each side by "t" in order to get it out of the denominator

500 ft/sec * t = 50 ft * t/t

t/t = 1

50 * 1 = 50

so

500 t feet/sec = 60 ft

divide both sides by 500 ft/sec and get

500 t feet/sec / (500 ft/sec) =50 ft / (500 ft/sec)

500 feet/sec divided by 500 ft/sec equals 1, and 1 times t is just t so

t=50 ft / (500 ft/sec)

t= .1 sec

so we went through that the way that uses the formula and works every time

but a quick look can give this a "makes sense" check

if you can go 500 feet in one sec, then it only going to take a tenth as long to go a tenth as far

so, 500 feet per 1 sec, means 50 feet in a tenth as long, or .1 sec

makes sense, huh?

• 10 years ago

.1 seconds

• Anonymous
10 years ago

0.1 seconds

500/1 = 50/0.1

Kind of like simplifying fractions.