Question

what is the speed of a man when man covers 20 km in 1 hr 20 min?​ with explanation ​

Answer 1

Question:

What is the speed of a man when man covers 20 km in 1 hr 20 min?

To find:

Speed?

We know That:

Speed=Distance÷Time

So substitute the values.

Remember,when the distance is given in S.I unit,

convert it to C.G.S.

After calculating we get speed=

• 250m/s
• or
• 900km/h

Please go through the attachment.

Answer 2

Answer:

speed=distance/time

20×1000m/4800s

25m/6s

contverting in km/h

25×60×60/6×1000

15km/h is the speed of man