1-D FREE FALL KINEMATICS, EASY QUESTION NEED HELP ASAP PLEASE

User Generated

xumnx

Science

Description

1.  Rob throws a baseball upwards at 14.2 m/s.  His friend, John, is sitting in a tree 4.5m above Rob.

a.  Calculate how long it will take to reach John.

b.  If John misses the ball as it moves upwards, how long will it take to reach John again.

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Explanation & Answer

Thank you for the opportunity to help you with your question!

Relevant equations Δd=V(Δt) + 1/2 (a)(Δt)^2 3.
I have found the time using the quadratic equation for part a which is 0.36s, but I am stuck on part b. I do not understand how to do it. It seems like Δd is the same in both parts. How in hell do I find Δt for part b.

Please let me know if you need any clarification. I'm always happy to answer your questions.


Anonymous
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