Question

Which expression calculates the speed in meters per second of an object that travels a distance of 40 m every 10 s?

40 + 10​​

10 ÷ 40​​

40 ÷​ 10​

40⋅10

Answer 1

the answer would be 40/10

Answer 2

For this case we have that by definition:

`s = \frac {d} {t}`

Where,

• s: speed
• d: distance
• t: time

Therefore, we have then:

`d = 40m\\t = 10s`

Thus, replacing values we have:

`s = \frac {40} {10}`

Answer:

An expression that calculates the speed in meters per second of an object that travels to distance of 40 m every 10 s is:

`s = \frac {40} {10}`

Option C.