Author Question: A marathon race is 26 mi and 385 yd long. Estimate how many strides would be required to run a ... (Read 34 times)

hubes95 · **on:** Jul 29, 2018

A marathon race is 26 mi and 385 yd long. Estimate how many strides would be required to run a marathon. Assume a reasonable value for the average number of feet/stride.

A) 4.5 104 strides
B) 4.5 103 strides
C) 4.5 105 strides
D) 4.5 106 strides

Question 2

As a 70-kg person stands at the seashore gazing at the tides (which are caused by the Moon), how large is the gravitational force exerted on that person by the Moon?

The mass of the Moon is 7.35 1022 kg, the distance to the Moon is 3.82 108 m, and G = 6.67 10-11 N m2/kg2.
A) 0.24 N
B) 0.024 N
C) 0.0024 N
D) 0.00024 N

Swizqar · **Reply #1 on:** Jul 29, 2018

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