Question

A baseball is traveling (+30 m/s) and is hit by a bat. It leaves the bat traveling (-40 m/s). What is the change in the velocity? Remember that direction is what makes velocity different than speed.

Answer 1

the change in the velocity -70 m/s.

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Change in velocity can be calculated by subtracting initial velocity from final velocity. The expression for the same is as follows.

`\Delta v = v_(f) - v_(i)`

where,
`\Delta v` = change in velocity

`v_(f)` = final velocity

`v_(i)` = initial velocity

It is given that initial velocity is +30 m/s and final velocity is -40 m/s. Thus, calculate the change in velocity as follows.

`\Delta v = v_(f) - v_(i)`

= -40 m/s - (+30 m/s)

= (-40 - 30) m/s

= -70 m/s

Therefore, the change in the velocity -70 m/s.