Sneeze!

Classical Mechanics Level 1

Suppose that you are in a train which travels at a constant speed of 90 km/h . 90 \text{ km/h}. If you let out a loud sneeze and close your eyes for 1 1 second because of that, how many meters will the train move while your eyes are closed?

15 m 15 \text{ m} 50 m 50 \text{ m} 25 m 25 \text{ m} 30 m 30 \text{ m}

Krishna Singh by Krishna Singh , 22, India

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2 solutions

Rama Devi
Jun 2, 2015

By converting 90 kmph into m/s , we get 25 m/s.

Therefore the distance travelled in 1 second is equal to 25m.

2 Helpful 0 Interesting 0 Brilliant 0 Confused

Moderator note:

Can you explain this line?

By converting 90 kmph into m/s , we get 25 m/s.

Arian Tashakkor
May 18, 2015

The "sneeze"-thing part and all are just the fancies.The question asks for the velocity of the train in m s \frac {m}{s} now we have :

\quad

90 k m h × 1000 m 1 k m × 1 h 3600 s = 25 m s 90 \frac{km}{h} \times \frac{1000m}{1km} \times \frac{1h}{3600s} = 25 \frac{m}{s}

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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