Question

Mindy is driving 32mi / h as she nears an elementary school. A first grade student runs into the street after a soccer ball, and Mindy reacts in about three -quarters of a second . What is her approximate reaction distance?

Answer 1

11 meters is her approximate reaction distance.

Explanation:

Speed of the car of Mindy = 32 mile/hour =
`(32* 1609.34 m)/(3600 s)`

1 mile = 1609.34 m

1 hour = 3600 seconds

Duration for her reaction last after student runs into street in front of her =
`(3)/(4) seconds`

Distance covered three -quarters of a second = d

`d=(32* 1609.34 m)/(3600 s)* (3)/(4) s`

d = 10.73 m ≈ 11 m

11 meters is her approximate reaction distance.