Question

A rocket travels 2.8x10^4 km h^-1. find how far it travels in 5 hours

Answer 1

It is given in the question that, a rocket travels 2.8x10^4 km h^-1.

It means in one hour, the rocket travels

$2.8* 10^4km.$

And we have to find how much the rocket travels in 5 hours, and for that we have to do multiplication, that is

$2.8*10^4 *5 = 14*10^4 = 1.4* 10^5 km$