Compute all parts of given question:
Question: A baseball player pops a pitch straight up. The ball (mass 210g) was traveling horizontally at 36.0m/s just before contact with the bat, and 21.0m/s just after contact.
Part A: Determine the magnitude of the impulse delivered to the ball by the bat.
Part B: Determine the direction of the impulse delivered to the ball by the bat. Assume the initial direction of the ball as +x-axis direction.
I want help to find the magnitude of the impulse delivered to the ball by the bat.