57 356
Assignments Done
99%
Successfully Done
In February 2018
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Mechanics | Relativity Question for Jenny

Question #4153
A ball is thrown upward from the ground with an initial speed of 18.2 m/s; at the same instant a ball is dropped from rest from a building 12 m high. After how long will the balls be at the same height?
Expert's answer
Let's write the equations of motion for both objects:
1. H1= H10 + v10t - gt2/2, H10=0, v10 = 18.2 m/s, g = 9.8 m/s2
2. H2 = H20 + v20t - gt2/2, H20=12, v20 = 0 m/s, g = 9.8 m/s2


Thus
H1 = H2
v10t - gt2/2 = H20 - gt2/2

v10t = H20

t = H20/v10 = 12/18.2 = 0.66 s

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be first!

Leave a comment

Ask Your question