Question

The chart shows data for four moving objects.

Which object has the greatest acceleration?
W
X
Y
Z

Answer 1

Object Y has the greatest acceleration.

Explanation:

We know that acceleration (a) =
`((final\ velocity) - (initial\ velocity))/(time)`.

Lets calculate the velocity of each objects separately.

Acceleration of W (a) =
`((final\ velocity) - (initial\ velocity))/(time)=((29-11))/(6) =3\ m\ s^-2`

Acceleration of X (a) =
`((final\ velocity) - (initial\ velocity))/(time)=((34-10))/(12) =2\ m\ s^-2`

Acceleration of Y (a) =
`((final\ velocity) - (initial\ velocity))/(time)=((40-12))/(7) =4\ m\ s^-2`

Acceleration of Z (a) =
`((final\ velocity) - (initial\ velocity))/(time)=((28-20))/(8) =1\ m\ s^-2`

Comparing all the values we see that acceleration of object
`Y` is greatest among all.