57 262
Assignments Done
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 Aliaa m

Question #16126
a sandwich is thrown upwards by a street vendor with velocity 10 m/s to a person in the second floor window of a building. if the vendor releases the sandwich from 2 m above the ground and the second floor window is 5 m above the ground at what velocity will the sandwich be moving when it is caught?
Expert's answer
The distance flown by sandwich is

H = 5[m] - 2[m] = 3[m].

Let the time needed the sandwich to fly this distance be T. Then

H = VT - gT²/2,


3[m] = 10[m/s]*T - 9.8[m/s²]*T²/2.

Let's find T.

4.9T² - 10T + 3 = 0 ==> T ≈ min{ 1.68, 0.37 } = 0.37 [s].

Therefore, the velocity of the sandwich at the moment of catching is

V ≈ 10[m/s] - 9.8[m/s²]*0.37[s] = 6.374 [m/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!


No comments. Be first!

Leave a comment

Ask Your question