Chemistry question

Question

if a jogger runs 96 yards in 10 seconds what would be his time in a 402 m run at the same time in seconds?

Answer 1

Let us first put everything in meters.

 

1 yard = 0.9144 m

 

96 yards = 96(0.9144) m = 87.7824 m

 

The jogger ran 87.7824 m in 10 seconds, so the speed was

 

v = d/t = 87.7824/10 m/s = 8.77824 m/s

 

If the jogger ran 402 m at the same speed, the time would be

 

t = d/v = (402 m) / (8.77824 m/s) ≅ 45.8 s 

Answer 2

This is a unit conversion question.
 1 meter = 1.094 yards

96 yards / 10 sec * 1 meter / 1.094 yards = 8.775 meters / 1 sec
402 meters * 1 sec / 8.775 meters = 45.8 seconds