Question

a speed skier registers an average speed of 233.7km/h over a distance of one kilometer how long did he takes to cover the kilometer?​

Answer 1

Answer:

(a) It will take 0.00427 hour = 15.372 sec

(b) In m/sec speed will be 6.4916 m /sec

Explanation:

(a) We have given speed of skier is 233.7 km/hr

Distance that he has to travel = 1 km

So distance = 1 km

We know that time=\frac{distance}{speed}=\frac{1}{233.7}=0.00427 hour=0.00427\times 3600=15.372sectime=

speed

distance

=

233.7

1

=0.00427hour=0.00427×3600=15.372sec

(b) Speed is given as 233.7 km/hr

We have to convert this into m/sec

We know that 1 km = 1000 m

And 1 hour = 3600 sec

So 233.7km/hr=\frac{233.7\times 1000}{3600}=6.4916m/sec233.7km/hr=

3600

233.7×1000

=6.4916m/sec