asked 54.1k views
2 votes
How to solve this question ???

How to solve this question ???-example-1
asked
User Gamrix
by
7.6k points

1 Answer

5 votes

Answer: 500 seconds

This is equivalent to the following

  • 8.33333 minutes (approximate)
  • 8 minutes, 20 seconds

============================================

Work Shown

distance = 1.5 * 10^8 km

speed = 3 * 10^8 m per sec = 3 * 10^5 km per sec

To go from "meters per second" to "kilometers per second", we divide by 1000, aka 10^3. This would mean the 10^8 becomes (10^8)/(10^3) = 10^(8-3) = 10^5. It's very important that we convert from meters to kilometers so the units match up.

Then we would say:

time = distance/speed

time = (1.5 * 10^8 km) / (3 * 10^5 km per sec)

time = (1.5/3) * (10^8)/(10^5) seconds

time = 0.5 * 10^(8-5) seconds

time = 0.5*10^3 seconds

time = 500 seconds

Let's convert from seconds to minutes.

500 seconds = (500 sec)*( (1 min)/(60 sec) )

500 seconds = 500/60

500 seconds = 8.333 minutes approximately

Or we could have this conversion

500 seconds = 500/60 = 8 remainder 20 = 8 minutes, 20 seconds

answered
User Bevoy
by
8.5k points

No related questions found

Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.