The speed of the solar wind is approximately 400 km/s and the distance from the Sun to Saturn is 9.5 AU (1 AU = $1.5 × 10^8$ km). How long does it take a particle in the solar wind to reach Saturn
A)about 4.1 hours
B)about 4.1 days
C)about 41 days
D)about 4.1 years
E)about 41 years

Question

Quizplus · Accepted Answer

The distance from the Sun to Saturn is 9.5 AU, which is $9.5 \times 1.5 \times 10^8$ km. The speed of the solar wind is 400 km/s. Time taken is distance divided by speed, which gives approximately 41 days.

The Speed of the Solar Wind Is Approximately 400 Km/s 1.5×1081.5 × 10^81.5×108

The Speed of the Solar Wind Is Approximately 400 Km/s $1.5 × 10^8$