Question

How long will a plane have to fly continuously with 1100 miles per hour in order to cover the same distance as that from Earth to the next star, Proxima Centauri?

Answer 1

Explanation :

It is given that,

Velocity of plane, v = 1100 mi/h

Proxima Centauri is a red dwarf star. Its distance from Earth to  Proxima Centauri is 4.243 light year.

Or we can say that the distance between Earth and  Proxima Centauri is,

$d=2.49\times 10^{13}\ miles$

We know that, time $t=\dfrac{d}{s}$

$t=\dfrac{2.49\times 10^{13}\ miles}{1100\ miles/h}$

$t=0.22\times 10^{11}\ h$

or

t = 2.5 years ( approx )

Hence, this is the required solution.