A hert pumps blood into the aorta which has an inner radius of 1.0cm. the aorta feeds 32 major arteries .if blood in the aorta travels at a speed of 28m\s at approximately what average speed does it travel in the arteries?.assume that blood can be treated as an ideal fluid and that the arteries each have an inner radius of 0.21 cm.

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s. when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?