Under normal conditions the human heart converts about 13.4 j of chemical energy per second into 1.34 w of mechanical power as it pumps blood throughout the body. hint (a) determine the number of calories required to power the heart for one day, given that 1 calorie equals 4186 j. cal (b) metabolizing 1 kg of fat can release about 9000 calories of energy. what mass of metabolized fat (in kg) would power the heart for one day? kg

the answer is kevlar

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.

did yall get answers for this yet