Tipler6 1.P.061. 1) A new space shuttle takes 3 days to travel from the Earth to
ID: 1397779 • Letter: T
Question
Tipler6 1.P.061.
1)
A new space shuttle takes 3 days to travel from the Earth to the Moon once it leaves Earth's orbit. Estimate the spacecraft's average speed in kilometers per hour, miles per hour, and meters per second. (The distance traveled from the Earth to the Moon is 2.39 × 105 miles.)
a)____mi/h
b)_____km/h
c)________m/s
2)
Tipler6 1.P.064.
1)
The speed of light in vacuum is 186000 mi/s = 3.0E+8 m/s. Use this fact to find the number of kilometers in a mile.
a)_____km/mi
b)The weight of 1.00 ft3 of water is 62.4 lb, and 1.00 ft = 30.5 cm. Use this information and the fact that 1.00 cm3 of water has a mass of 1.00 g to find the weight in pounds of a 1.00-kg mass. _____lb/kg
3)Tipler6 1.P.065.
Explanation / Answer
A new space shuttle takes 3 days to travel from the Earth to the Moon once it leaves Earth's orbit. Estimate the spacecraft's average speed in kilometers per hour, miles per hour, and meters per second. (The distance traveled from the Earth to the Moon is 2.39 × 105 miles.)
d = distance = 2.39 x 105 mi = 2.39 x 105 x 1.61 = 3.85 x 105 km = 3.85 x 108 m
t = time = 3 days = 3 x 24 hours = 72 h = 72 x 3600 sec
a)
average speed = d/t = 2.39 x 105 / 72 = 3319.44 mi/h
b)
average speed = d/t = 3.85 x 105 km / (72) = 5347.22 km/h
c)
average speed = d/t = 3.85 x 108 m / (72 x 3600) = 1485.34 m/s
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