While a person is walking, his arms {with typical lengths 70 cm measured from the shoulder joint) swing through approximately a 45 angle in 0.5 s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. Find the magnitude of the force that the blood vessel must exert on the drop of blood. Express your answer using two significant figures. Find the direction of the force that the blood vessel must exert on the drop of blood What force would the blood vessel exert if the arm were not swinging? Express your answer using two significant figures. Mars rotates on its axis once every 24.8 hours, its mass is 6.42 Times 1023 kg and its radius is 3.37 Times 106 m What is the free-fall acceleration on Mars? Express your answer using three significant figures. Estimate the maximum speed that an astronaut can walk on the surface of Mars. Express your answer using two significant figures.
While a person is walking, his arms {with typical lengths 70 cm measured from the shoulder joint) swing through approximately a 45 angle in 0.5 s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. Find the magnitude of the force that the blood vessel must exert on the drop of blood. Express your answer using two significant figures. Find the direction of the force that the blood vessel must exert on the drop of blood What force would the blood vessel exert if the arm were not swinging? Express your answer using two significant figures. Mars rotates on its axis once every 24.8 hours, its mass is 6.42 Times 1023 kg and its radius is 3.37 Times 106 m What is the free-fall acceleration on Mars? Express your answer using three significant figures. Estimate the maximum speed that an astronaut can walk on the surface of Mars. Express your answer using two significant figures.
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