Recent content by LesVampires

never mind i got it!

no I am not, coz it acts like distance vs displacement kinda, so i still don't get what's wrong with the equation

twice as much?

oh its in the opposite direction

im honestly clueless at this point... energy is conserved?

momentum is conserved? like KE0=KEf

well the v is halved right? so 1/2 mv2

then what would it be? the equation can't figure it out

Superman leaps in front of Lois Lane to save her from a volley of bullets. In a 1 minute interval, an automatic weapon fires 149 bullets, each of mass 8.0 g, at 430 m/s. The bullets strike his mighty chest, which has an area of 0.74 m2. Find the average force exerted on Superman's chest if the...

isnt that what's left of the equation?

well the pgys are 0 u have v= 2change in P/pv pv is A right? P=1.01 x10^5 and

hmm i know that Av= Av and the equations but i keep gettin a wrong answer... A= 2.2x10^-5 m^2

A hypodermic syringe contains a medicine with the density of water (see figure below). The barrel of the syringe has a cross-sectional area of 2.20 10-5 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm. A force of magnitude 1.80 N is exerted on the plunger...