Question

Sandra runs A new personal best in the hundred meter dash her average speed is 7.4 m/s how long to the nearest hundredth does it take her to run the race

Answer 1

`13.51\ \text{s}`

Explanation:

`s` = Average speed of Sandra =
`7.4\ \text{m/s}`

`d` = Distance Sandra ran =
`100\ \text{m}`

Time is given by

`t=(d)/(s)`

`\Rightarrow t=(100)/(7.4)`

`\Rightarrow t=13.51\ \text{s}`

The time it takes Sandra to run the given distance is
`13.51\ \text{s}`.