Question

A baseball is traveling (+20 m/s) and is hit by a bat. It leaves the bat traveling (-30 m/s). What is the change in the velocity?

A) 10 m/s

B) 20 m/s

C) 30 m/s

D) 50 m/s

Answer 1

D.

A more accurate answer would be -50 m/s. 50 m/s is the change in speed.

Answer 2

Answer: Option (D) is the correct answer.

Step-by-step explanation:

Change in velocity is calculated when initial velocity is subtracted from final velocity.

Formula to calculate change in velocity is as follows.

`\Delta V = final velocity (V_(f)) - initial velocity (V_(i))`

= (-30 m/s) - (+20 m/s)

= (-30 - 20) m/s

= - 50 m/s

Therefore, change in velocity is 50 m/s.