Assuming constat velocities, If a fastball pitch is thrown andtravels at 40m/s t

Question

Assuming constat velocities, If a fastball pitch is thrown andtravels at 40m/s toward home plate, 18m away, and the head of thebat is simultaneously traveling toward the ball at 18.0m/s, howmuch time elapses before the bat hits the ball? a. about.3s             c about .9s b   about.6s             d about 1.2s Assuming constat velocities, If a fastball pitch is thrown andtravels at 40m/s toward home plate, 18m away, and the head of thebat is simultaneously traveling toward the ball at 18.0m/s, howmuch time elapses before the bat hits the ball? a. about.3s             c about .9s b   about.6s             d about 1.2s

Explanation / Answer

I am not sure if the bat and the ball start at 18 m apart from eachother, but if they do this shouldn't be too tough. velocity = distance / time rearrange that to get what you are trying to solve for whichis: time = distance / velocity (double check by using your units of dand v to make sure you end up with time units of s) you know the distance, the velocity takes a little morethinking. If the ball and the bat are traveling towards eachother, it seems that they are actually getting closer together at avelocity of (40 + 18) m/s. That's the real velocity you wantto use in your t=d/v equation. Show your work: Make a diagram and label the velocities of the objects, think ofreference points, make sure you use units. Good luck!

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