The aorta in an average adult has a cross-sectional area of 2.0 cm^2. calculate the flow rate of blood of 1.0 g/cm^3 in the aorta if the flow speed is 43 cm/s. answer in units of g/s. (i did this part and the correct answer is 86) assume that the aorta branches to form a large number of capillaries with a combined cross-sectional area of 2.9 × 10^3 cm^2. what is the flow speed in the capillaries? answer in units of cm/s.

The figure is missing but we can answer anyway.the correct answer is "releasing the string". in fact, when the person is holding the bow and the arrow, the kinetic energy of the arrow is still zero (because the arrow is not moving). the moment the arrow is released, it acquires a velocity v, so its kinetic energy will become different from zero: where m is the mass of the arrow and v its velocity.  all the other options, instead, do not increase the kinetic energy of the system: -  pulling farther back on the string : this will just increase the elastic potential energy of the system-  holding the arrow higher: this will increase the gravitational potential energy of the system (which is given by u=mgh, where h is the height above the ground)-  decreasing the mass of the arrow: this will decrease the gravitational potential energy of the system (which is given by u=mgh, where m is the mass)