Question

Which of the following best represents the speed of Halley's comet when it is nearest to Earth?
1 × 10^5 kilometers per year
1 × 10^5 kilometers per hour
1 × 10^-5 kilometers per hour
1 × 10^-5 kilometers per year

Answer 1

B.) 1 x 10^5 kilometers per hour
:)

Answer 2

thanks