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Physics 18 Online
zarkam21:

Division?

zarkam21:

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zarkam21:

@Vocaloid

sillybilly123:

\(\dfrac{mv}{v}\)??

zarkam21:

57.7?

Vocaloid:

check your calculations again

zarkam21:

D

zarkam21:

A for this?

zarkam21:

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zarkam21:

@Shadow this would be A right?

Vocaloid:

Impulse = force * time

zarkam21:

D

zarkam21:

because it equals 322.5 which is rounded to 323

zarkam21:

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Vocaloid:

F = ma F = m(delta v/t) since acceleration is equal to delta v/t Ft = m*deltaV by multiplying both sides by t so impulse = Ft = m* delta v = ?

Vocaloid:

"delta" means change, or in this case, final velocity - initial velocity

zarkam21:

C

Vocaloid:

awesome

zarkam21:

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Vocaloid:

remember that momentum is mv an increase in momentum (8000) is m*deltav so impulse = Ft = m* delta v = 8000 (D)

zarkam21:

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zarkam21:

B

Vocaloid:

Hm... since change in momentum is just m * deltav it should actually be the same regardless of whether you're wearing kneepads or not , so I will hesitantly say D but I'm going to double check w/ sillybilly @sillybilly123

Vocaloid:

we can move on to the next one in the meantime i guess

zarkam21:

Yeah i tagged you in my other question it is in mathematics

sillybilly123:

\(\huge{ \checkmark}\)

sillybilly123:

eg the science of car crumple zones

zarkam21:

Got it thank you so much @sillybilly123

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