A sprinter finishes the 100 m dash in 9 seconds. What was the sprinter's speed?

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Answer 1 · 2018-03-01T08:09:20

#11.11111ms^-1#

#Speed = "Distance"/"Time"#

#Speed = "100m"/"9s"#

#Speed = 11.11111ms^-1#

Answer 2 · 2018-03-01T12:28:49

#~~11.1 \ "m/s"#

Speed is given by the equation

#s=d/t#

Here, #d=100 \ "m",t=9 \ "s"#.

Plugging in those values, we get

#s=(100 \ "m")/(9 \ "s")~~11.1 \ "m/s"#