Four students recorded the time it took them to walk to school from their
homes as shown in the tabel below.
Motion of Four Students
Student
Which student had the greatest average speed?

Student 1

Student 2

Student 3

Student 4

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Answer is in the photo. I can only upload it to a file hosting service. link below! Good Luck!

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here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

this could be newton#'s law of cooling. the cooling curve is exponential