Question

Ramesh could run a 100-m race in 20 seconds. After training, he can finish the race in
15 seconds. By how much has he improved his speed?
​

Answer 1

Answer:

5m/s

Step-by-step explanation:

obviously because the time decreased by 5 and speed will increase by five since time and speed are inversely propotional

time=1/√speed and vice versa

so the ans is 5 m/s