physics question.... Impulse problem - baseball?

Question

alright i have a baseball traveling west at 3.8(m/s) and a bat hits it with a force of 0.6(N) and the resulting velocity of the ball is 4.2 (m/s) in the East direction.

I need to fin the Mass of the baseball. To do this, I used the equation
I=deltaP
I got an answer of 13.3g - but I am not sure i used the right equation. Any ideas??

i don't think F=Ma is applicable because it is an impulse problem?

Answer 1

For impulse:
I = FΔt = mΔv

You used the part of correct formula. The problem is that you don't have the Δt.

FΔt = mΔv
m = Δv/FΔt = 8 m/s / .6N * Δt = 13.333/Δt

Once you have Δt, you can find the mass.