1) A parachutist of total mass 90kg (including the parachute) is falling at a terminal velocity of 6m/s. Take the force due to gravity on a mass of 1 kg to be 10N. What is the magnitude of the air resistance force acting on her?

A) zero

B) 150N

C) 540N

D) 900N

E) 5400N

2) A heart exerts a maximum (systolic) pressure of 152 mm Hg. This pressure is applied to an aorta of cross sectional area 2 cm² .What force must be generated by the heart in order to apply this pressure? (Take 760 mm Hg to be 1.0 atmosphere which is 100 kPa.)

A) 0.004 N

B) 4N

C) 40N

D) 400 N