Question

The table below shows the distance traveled for runners at several times throughout a run.

Runner 0 s 30 s 60 s 90 s 120 s

Affas 0 m 20 m 45 m 75 m 95 m

Heather 0 m 18 m 43 m 77 m 105 m

Karen 0 m 24 m 48 m 72 m 96 m

Melanie 0 m 30 m 58 m 84 m 104 m

Which runner displayed non-accelerated motion?


Heather

Melanie

Karen

Affas

Answer 1

karen & melanie

Step-by-step explanation:

Runner 0 s 30 s 60 s 90 s 120 s

use one distance # minus the previous #

Affas 0 m 20 m 45 m 75 m 95 m

diff: 20. 25 30 20 accelerate then decelerate

Heather 0 m 18 m 43 m 77 m 105 m

diff: 18 25 34 28 accelerate then decelerate

Karen 0 m 24 m 48 m 72 m 96 m

diff: 24 24 24 24 no acceleration constant speed

Melanie 0 m 30 m 58 m 84 m 104 m

diff: 30 28 26 20 decelerate the whole time so this is also non-accelerated motion