57 384
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 Alison

Question #647
Luis punts a football straight up into the air. it is in the air a total of 5 seconds. How many seconds did it spend going up? coming down? and how fast did it leave his foot? How fast was it moving right before hitting the ground, and how high did it go?
Expert's answer
Due to the symmetry of the motion it spent going up 2.5 sec, coming down - 2.5 sec. Use the formula v-gt=0, where t is the time spent going up or down, thus v=gt=10*2.5=25 m/sec. The velocity right before hitting the ground is the same. The height of motion would be:
h=vt-gt^2/2=25*2.5-10*2.5^2/2=31.25 m

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