Question

1) Blood is pumped from the heart at a rate
of 5.0 L/min into the aorta (of radius 1.0
cm). Determine the speed of blood through
the aorta.


2)a bullet of mass 0.05kg is fired with a velocity of 200m/s into a lead block of 0.9kg. Given that the lead block can move freely, the final kinetic energy after impact is?.

Answer 1

1) (5000 cm^3 / min) / (aorta cross sectional area)

2) momentum is conserved

(velocity B+b) * (mass B+b) = (velocity b) * (mass b)

final K.E. ... 1/2 (mass B+b) * (velocity B+b)^2