8:59 PM 31% eagleonline.hccs.edu D Question 7 1 pts Consider a human heart rate

Question

8:59 PM 31% eagleonline.hccs.edu D Question 7 1 pts Consider a human heart rate of 80 beats per minute. If someone's heart beats at that rate over a 70-yr lifetime, how many times would it beat? O 1.78 × 10-sup-70p 744&215: 10sup5u O 326 × 10°supl0c/sup> o 2.20 × 10-s p.9 D Question 8 1 pts A new car manufacturer advertises that their car can go "from zero to sity in 8 s. This is a description of average speed O none of the given answers D Question 9 1 pts Which physical unit represents acceleration in the British system O 40 km, SW -120 mit847s 186,000m

Explanation / Answer

7] number of beats = 80*70*365.25*24*60 = 2.95*10^9 times

first option is correct.

8] Average acceleration, because a = [v2-v1]/t

9] second option is correct. British system acceleration is in ft/s^2

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