Question

4. Which is greater - a speed of 24 km/h or a speed of 12.8 m/sec?
5. Ron covers a distance of 1710 m in 3 minutes. Find his speed in km/hr.

Answer 1

Answer:

4. convert 24 km/hr into m/s that will be 24*5/18 that will be 20/3 which will be appropriate to 6.67m/s so speed 12.8m/s will be greater

5.distance is 1710 m which equals to 1.71 km and 3 minutes equals to 3*60 =180 seconds

Now divide 1710/180 u will get some answer in m/s and then convert it into km/hr

approximately the answer will be 9.5 m/s which will be 34.2 km/hr.

Answer 2

Answer:

1. 12.8 m/s 2. 3.42km/hr

Step-by-step explanation:

1. 24 km/h= 24*5/18(convert into m/s)

=6.6666......

2.1710m =1.71km

t=3/60=1/20

:=1.71/1/20

=1.71*20/1

=3.42/1

speed=3.42km/hr